ML061290293
| ML061290293 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 04/25/2006 |
| From: | Bauer S Arizona Public Service Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 102-05469-SAB/TNW/CJJ | |
| Download: ML061290293 (67) | |
Text
L A R S A subsidiary of Pinnacle West Capitd Corporadon Scott A. Bauer Department Leader Regulatory Affairs Tel. 623-393-5978 Mail Station 7636 Palo Verde Nuclear Fax 623-393-5442 PO Box 52034 Generating Station e-mail: Scott.Bauer@aps.com Phoenix, Arizona 85072-2034 102-05469-SAB/TNW/CJJ April 25, 2006 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001
Dear Sir:
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Units 1, 2 and 3 Docket Nos. STN 50-52815291530 Annual Radiological Environmental Operating Report 2005 In accordance with PVNGS Technical Specification (TS) 5.6.2, enclosed please find the Annual Radiological Environmental Operating Report for 2005.
No commitments are being made to the NRC in this letter. If you have any questions, please contact Thomas N. Weber at (623) 393-5764.
Sincerely, SABITNW/CJJ/ca Enclosure cc:
B. S. Mallett M. B. Fields G. G. Wamick A. V. Godwin A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway 0 Comanche Peak 0 Diablo Canyon 1 Palo Verde U1 South Texas Project 0 Wolf Creek
ENCLOSURE Annual Radiological Environmental Operating Report 2005
/
NUCLEAR GENERATING STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 2005
(
Reference:
RCTSAI 1643, Legacy Item No. 036843.01)
Date: 0330=2006:35:34 Reason: I tun WIe auwt of this doowi Location: PVNCS Prepared by Reviewed by Digitally signed by: Bunga, James P(Z18012)
Date: 03/30/2006 12:21:11.
Reason: I have reviewed
!ls document Location: PVNGS Digitally signed by: Gaffney, qohn P(Z36459)
Date: 04/14/2006 18:16:00 i
Reason: I am approving thisdocument Location: PVNGS Approved by
TABLE OF CONTENTS
- 1.
INTRODUCTION......................................................................... 2
- 2.
DESCRIPTION OF THE MONITORING PROGRAM.......................................3
......................... 3 2.1.
2005 PVNGS RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM............
...................... 3 2.2.
RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM CHANGES FOR 2005......................... 3 2.3.
REMP DEVIATIONS/ABNORMAL EVENTS
SUMMARY
................................................................... 4
- 3.
SAMPLE COLLECTION PROGRAM.........................................................................
10 3.1.
WATER.............................................................
............ 10 3.2.
VEGETATION..........................................................................
0 3.3.
MILK.........................................................................
10 3.4.
AIR........
1 0 3.5.
SLUDGE AND SEDIMENT.......................................................................... 1 1
- 4.
ANALYTICAL PROCEDURES..................................................................................................1 4.1.
AIR PARTICULATE......................................................................... 11 4.2.
AIRBoRNE RADIOODINE.......................................................................... 1l 4.3.
MILK.........................................................................
11 4.4.
VEGETATION.........................................................................
12 4.5.
SLUDGE/SEDIMENT......................................................................... 12 4.6.
WATER.........................................................................
12 4.7.
SOIL.........................................................
13
- 5.
NUCLEAR INSTRUMENTATION.........................................................................
13 5.1.
GAMMA SPECTROMETER......................................................................... 13 5.2.
LIQUID SCINTILLATION SPECTROMETER.........................................................................
13 5.3.
GAS FLOW PROPORTIONAL COUNTER...................................
...................................... 13
- 6.
ISOTOPIC DETECTION LIMITS AND REPORTING CRITERIA 14 6.1.
LOWER LIMITS OF DETECTION................................................................................................... 14 6.2.
DATA REPORTING CRITERIA...............................
14 6.3.
LLD AND REPORTING CRITERIA OVERVIEW................................................... 15
- 7.
INTERLABORATORY COMPARISON PROGRAM......................
............................. 20 7.1.
QUALITY CONTROL PROGRAM...................................................................................
20 7.2.
INTERCOMPARISON RESULTS.............................
20
- 8.
DATA INTERPRETATIONS AND CONCLUSIONS..................
........................ 23 8.1.
AIR PARTICULATES.23 8.2.
AIRBORNE RADIoIODINE...............
24 8.3.
VEGETATION...............
24 8.4.
MILK.24 8.5.
DRINKING WATER.24 8.6.
GROUNDWATER.24 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 ii
TABLE OF CONTENTS 8.7.
SURFACE WATER.........................................................
24 8.8.
SLUDGE AND SEDIMENT..........................................................
25 8.9.
DATA TRENDS..........................................................
26
- 9.
THERMOLUMINESCENT DOSIMETER (TLD) RESULTS AND DATA 47
- 10.
LAND USE CENSUS..........................................................
53 10.1.
INTRODUCTION..........................................................
53 10.2.
CENSUS RESULTS.........................................................
53
- 11.
SUMMARY
AND CONCLUSIONS......................................................... 55
- 12.
REFERENCES..........................................................
60 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 iii
LIST OF TABLES TABLE 2.1 SAMPLE COLLECTION LOCATIONS...........................................................
5 TABLE 2.2 SAMPLE COLLECTION SCHEDULE............................................................
6 TABLE 2.3 SUMMARIES OF REMP DEVIATIONS/ABNORMAL EVENTS...................................... 7 TABLE 6.1 ODCM REQUIRED LOWER LIMITS OF DETECTION (A PRIORI)............................... 17 TABLE 6.2 ODCM REQUIRED REPORTING LEVELS...........................................................
18 TABLE 6.3 TYPICAL MDA VALUES..........................................................
19 TABLE 7.1 INTERLABORATORY COMPARISON RESULTS.......................................................... 21 TABLE 8.1 PARTICULATE GROSS BETA IN AIR 1ST - 2ND QUARTER....................................... 27 TABLE 8.2 PARTICULATE GROSS BETA IN AIR 3RD - 4TH QUARTER....................................... 28 TABLE 8.3 GAMMA IN AIR FILTER COMPOSITES..........................................................
29 TABLE 8.4 RADIOIODINE IN AIR 1ST - 2ND QUARTER...........................................................
30 TABLE 8.5 RADIOIODINE IN AIR 3RD - 4TH QUARTER..........................................................
31 TABLE 8.6 VEGETATION...........................................................
32 TABLE 8.7 MILK..........................................................
33 TABLE 8.8 DRINKING WATER...........................................................
34 TABLE 8.9 GROUNDWATER..........................................................
36 TABLE 8.10 SURFACE WATER...........................................................
37 TABLE 8.11 SLUDGE/SEDIMENT..........................................................
40 TABLE 9.1 TLD SITE LOCATIONS...............................................................4...................................
48 TABLE 9.2 2005 ENVIRONMENTAL TLD RESULTS.......................................
50 TABLE 10.1 2005 LAND USE CENSUS..............................................4.......
................................. 54 TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL
SUMMARY
... 56 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 iv
LIST OF FIGURES FIGURE 2.1 REMP SAMPLE SITES - MAP (0-10 miles)...................................................................
8 FIGURE 2.2 REMP SAMPLE SITES - MAP (10-35 miles).................................................................
9 FIGURE 8.1 HISTORICAL GROSS BETA IN AIR (WEEKLY SYSTEM AVERAGES).........
...... 42 FIGURE 8.2 HISTORICAL GROSS BETA IN AIR (ANNUAL SITE TO SITE COMPARISONS)
COMPARED TO PRE-OP...................................................................... 43 FIGURE 8.3 GROSS BETA IN DRINKING WATER...................................................................... 44 FIGURE 8.4 EVAPORATION POND TRITIUM ACTIVITY............................................................ 45 FIGURE 8.5 SEDIMENTATION BASIN #2 Cs-137.......................................................................
46 FIGURE 9.1 NETWORK ENVIRONMENTAL TLD EXPOSURE RATES...............
....................... 51 FIGURE 9.2 ENVIRONMENTAL TLD COMPARISON - PRE-OPERATIONAL VS 2005............ 52 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 V
ABSTRACT The Radiological Environmental Monitoring Program (REMP) is an ongoing program conducted by Arizona Public Service Company (APS) for the Palo Verde Nuclear Generating Station (PVNGS).
Various types of environmental samples are collected near PVNGS and analyzed for plant related radionuclide concentrations.
During 2005, the following categories of samples were collected by APS:
- Broad leaf vegetation Groundwater
- Drinking water
- Surface water
- Airborne particulate and radioiodine
- Goat milk
- Sludge and sediment Thermoluminescent dosimeters (TLDs) were used to measure environmental gamma radiation. The Environmental TLD program is also conducted by APS.
The Arizona Radiation Regulatory Agency (ARRA) performs radiochemistry analyses on various duplicate samples provided to them by APS. Samples analyzed by ARRA include onsite samples from the Reservoir, two (2) Evaporation Ponds, and two (2) deep wells. Offsite samples analyzed by ARRA include two (2) local resident wells. ARRA also performs air sampling at seven (7) offsite locations identical to APS and maintains approximately fifty (50) environmental TLD monitoring locations, eighteen (18) of which are duplicates of APS locations.
A comparison of pre-operational and operational data indicates no changes to environmental radiation levels. There were no measurable radiological impacts on the environment due to PVNGS operations in 2005.
(NOTE: Reference to APS throughout this report refers to PVNGS personnel)
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 1
OPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
- 1.
Introduction This report presents the results of the operational radiological environmental monitoring program conducted by Arizona Public Service Company (APS). The Radiological Environmental Monitoring Program (REMP) was established for the Palo Verde Nuclear Generating Station (PVNGS) by APS in 1979. The REMP is performed in accordance with the federal requirements to provide a complete environmental monitoring program for nuclear reactors, and with concern for maintaining the quality of the local environment. The program complies with the requirements of 10 CFR 50, Appendix I, PVNGS Technical Specifications, and with the guidance provided by the US Nuclear Regulatory Commission (USNRC) in their Radiological Assessment Branch Technical Position on Environmental Monitoring, Revision 1, November 1979.
This report contains the measurements and findings for 2005. All references are specifically identified in Section 12.
The objectives of the REMP are as follows: 1) to determine baseline radiation levels in the environs prior to plant operation and to compare the findings with measurements obtained during reactor operations; 2) to monitor potential critical pathways of radio-effluent to the public; and 3) to determine radiological impacts on the environment caused by the operation of PVNGS.
Results from the REMP help to evaluate sources of elevated levels of radioactivity in the environment (e.g., atmospheric nuclear detonations or abnormal plant releases).
Results of the PVNGS pre-operational environmental monitoring program are presented in Reference 1.
The initial criticality of Unit 1 occurred May 25, 1985. Initial criticality for Units 2 and 3 were April 18, 1986, and October 25, 1987, respectively. PVNGS operational findings (historical) are presented in Reference 2.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 2
- 2.
Description of the Monitoring Program APS and vendor organizations performed the pre-operational radiological environmental monitoring program, which began in 1979. APS and vendors continued the program into the operational phase.
2.1.
2005 PVNGS Radiological Environmental Monitoring Program The assessment program consists of routine measurements of background gamma radiation and of radionuclide concentrations in media such as air, groundwater, drinking water, surface water, vegetation, milk, sludge, and sediment.
Samples were collected by APS at the monitoring sites shown in Figures 2.1 and 2.2.
The specific sample types, sampling locations, and sampling frequencies, as set forth in the PVNGS Offsite Dose Calculation Manual (ODCM), Reference 4, are presented in Tables 2.1, 2.2 and 9.1. Additional onsite sampling (outside the scope of the ODCM) is performed to supplement the REMP. All results are included in this report. Sample analyses were performed by APS at the PVNGS Central Chemistry Laboratory.
Background gamma radiation measurements were performed by APS using TLDs at forty-nine (49) locations near PVNGS.
In addition to monitoring environmental media, a land use census is performed annually to identify the nearest milk animals, residents, and gardens. This information is used to evaluate the potential dose to members of the public for those exposure pathways that are indicated.
2.2.
Radiological Environmental Monitoring Program Changes for 2005 x One (1) new air sample station was placed at a new school in May xc The control (goat) milk location changed in July due to unavailability of samples at the previous location.
c One (goat) milk indicator location changed in July due to unavailability of samples at the previous location.
Refer to Table 2.1 for a description of all current sample locations (except TLDs).
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 3
2.3.
REMP Deviations/Abnormal Events Summary During calendar year 2005, there were three (3) deviations/abnormal events with regard to the monitoring program. Refer to Table 2.3 for more detail and any corrective actions taken.
Air samples were invalidated from Sites #29 and #35 for gross beta the week of 1/4-1/11.
- Air samples were invalidated from Site #17A for gross beta and radioiodine the week of 10/4-10/11.
- The WRF Influent I-131 concentration exceeded 100 pCi/liter on one (1) occasion.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 4
Table 2.1 SAMPLE COLLECTION LOCATIONS SAMPLE TYPE LOCA TION DESCRIPTION air air air air air air air air air air drinking water vegetation drinking water drinking water milk vegetation milk milk drinking water (supplemental) groundwater groundwater surface water surface water vegetation surface water APS Office Old US 80 Arlington School 37 lt Ave. and Buckeye-Salome Rd.
NE Site Boundary 351st Ave.
S Site Boundary W Site Boundary Tonopah Transmission Rd McArthur residence McCoy residence Berryman residence Chowanec residence Painter residence-goats Branch residence Barber residence-goats (until July), replaced by Adams residence (NE36)
Branch residence-goats (until July), replaced by Hernandez residence (NNE4)
Gavette residence Well 27ddc Well 34abb Evaporation Pond #1 Reservoir Duncan Family Farms Evaporation Pond #2 NOTES:
Designates a control site (a) Distances and direction are from the center-line of Unit 2 containment nearest mile (b) Denotes a change in location or a new sample location and rounded to the i,
Air sample sites designated with the letter 'A' are sites that have the sanme site number as a TLD location, but are not in the same location (e.g. site #6 TLD location is different from site #6A air sample location; site #4 TLD location is the same as site #4 air sample location)
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 5
Table 2.2 SAMPLE COLLECTION SCHEDULE SAMPLE AIR AIRBORNE GROUND DRINKtNG SURFACE SITE #
PARTICULATE MILK RADIOIODINE VEGETATION WATER WATER WATER 4
W W
6A W
W 7A W
W 14A W
W 15 W
W 17A W
W 21 W
W 29 W
W 35 W
W 40 W
W 46 W
47 M/AA 48 W
49 W
51 M/AA 52 vM/AA 53 M/AA 54 M/AA 55 W
57 Q
58 Q
59 W
60 W
62 M/AA 63 W
W = WEEKLY M/AA - MONTHLY AS AVAILABLE Q = QUARTERLY PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 6
TABLE 2.3 SUMMARIES OF REMP DEVIATIONS/ABNORMAL EVENTS Deviation/Abnormal Event
- 1. Air sample results from Sites #29 and #35 for gross beta were invalidated the week of 1-11-05. Results were abnormally low when compared to other samples collected during the same period.
- 2. Air sample results from Site #17A for gross beta and radioiodine were invalidated due to pump inoperability the week of 10-11-05.
- 3. The WRF Influent I-131 concentration exceeded 100 pCi/liter (actual value was 158 pCi/liter the week of May 31) on one occasion.
Actions taken
- 1. The technician who obtained the samples stated that the samples had become wet from rain, which could have affected the results. The samples were invalidated due to the high RSD%
(24%). Subsequent sample results were normal.
No additional actions are necessary.
- 2. The air sample pump was not running when the technician arrived at the sample location, although the ETM had power. The actual sample volume could not be determined. Equipment was replaced and subsequent samples were valid. No additional actions are necessary.
- 3. Phoenix sewage effluent is the supply for this water and is known to contain radiopharmaceutical I-131. The Arizona Radiation Regulatory Agency is notified when this source of water exceeds an 1-131 concentration of 100 pCi/liter (the threshold is exceeded on an infrequent basis). This is considered a courtesy notification (not regulatory) and no further action is required.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 7
I FIGURE 2.1 I
N..a~*...
61.2r
'S I
IIASSAYAMPA RIVER
.NNE BUCKEYE RD RD
~
AIRPORTA I1..
HOPEVILLE 6
9 I
p ~
Ro EHERD yROD"~
L7 1OR
.TR
~.!*tAtDTA O
5 4
~
CHOOL
'N NI PALOOVERRD AMsw..ri WSWW 1tI.25 687*
GILLARIVE SS i KEYITOMAP Sample Site 0g School; A lJr Airstrip +
V Vegetation W Water T TLD M Milk REMP SAMPLE SITES 0-10 MILES PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 8
ESE 25 mibs 10 nils 35 fles KEY TO MAP Sample Site (
A Air V Vegetation W Water T liD School I Airstripg REMP SAMPLE SITES 10-35 MILES
- 3.
Sample Collection Program APS personnel using PVNGS procedures collected all samples.
3.1.
Water Weekly samples were collected from the Reservoir, Evaporation Pond #1, Evaporation Pond #2, and four (4) residence wells. Samples were collected in one-gallon containers and 500 ml glass bottles. One liter from each weekly one-gallon sample was added to a monthly composite, which is preserved with nitric acid (HN0 3). The composite samples were then analyzed for gamma emitting radionuclides. Residence wells were also analyzed for gross beta activity. Weekly grab samples in glass bottles were composited quarterly and analyzed for tritium.
Quarterly grab samples were collected from onsite wells 34abb and 27ddc. Samples were collected in one-gallon containers and 500 ml glass bottles. Samples were analyzed for gamma emitting radionuclides and tritium.
Treated sewage effluent from the City of Phoenix was sampled as a weekly composite at the onsite Water Reclamation Facility (WRF), and analyzed for gamma emitting radionuclides. A monthly composite was analyzed for tritium.
3.2.
Vegetation Vegetation samples were collected monthly, as available, and were analyzed for gamma emitting radionuclides.
3.3.
Milk Goat milk samples were collected monthly, as available, and were analyzed for gamma emitting radionuclides, including low level I-131.
3.4. Air Air particulate filters and charcoal cartridges were collected at nine (9) sites on a weekly basis. In May, a tenth air sample station was installed at a new school.
Particulate filters were analyzed for gross beta. Charcoal cartridges were analyzed for I-131. Particulate filters were composited quarterly, by location, and analyzed for gamma emitting radionuclides.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 10
3.5.
Sludge and Sediment Sludge samples were obtained weekly from the WRF waste centrifuge (whenever the plant was operational) and analyzed for gamma emitting radionuclides. Samples were collected using 1 liter containers.
Scale/sludge was removed from cooling tower louvers and circulating water/plant cooling water piping and analyzed for gamma emitting radionuclides.
Cooling tower sludge was analyzed for gamma emitting radionuclides.
Bottom sediment/sludge samples were obtained from Evaporation Pond #1, Evaporation Pond #2, and Sedimentation Basin #2 and analyzed for gamma emitting radionuclides.
Sediment samples were collected from Sedimentation Basin #2 and analyzed for gamma emitting radionuclides.
- 4.
Analytical Procedures The procedures described in this report are those used by APS to routinely analyze samples.
4.1.
Air Particulate 4.1.1.
Gross Beta A glass fiber filter sample is placed in a stainless steel planchet and counted for gross beta activity utilizing a low background gas flow proportional counter.
4.1.2.
Gamma Spectroscopy The glass fiber filters are counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by a computer for specific radionuclides.
4.2.
Airborne Radioiodine The charcoal cartridge is counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by a computer for I-131.
4.3.
Milk 4.3.1.
Gamma Spectroscopy The sample is placed in a plastic marinelli beaker and counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by a computer for specific radionuclides.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 11
4.4.
Vegetation 4.4.1.
Gamma Spectroscopy The sample is pureed in a food processor, placed in a one liter plastic marinelli beaker, weighed, and counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by a computer for specific radionuclides.
4.5.
Sludge/Sediment 4.5.1.
Gamma Spectroscopy The wet/dry sample is placed in a one-liter plastic marinelli beaker, weighed, and counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by a computer for specific radionuclides.
4.6.
Water 4.6.1.
Gamma Spectroscopy The sample is placed in a one-liter plastic marinelli beaker and counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by a computer for specific radionuclides.
4.6.2.
Tritium The sample is evaluated to determine the appropriate method of preparation prior to counting. If the sample contains suspended solids or is turbid, it may be filtered, distilled, and/or de-ionized, as appropriate. Eight (8) milliliters of sample are mixed with fifteen (15) milliliters of liquid scintillation cocktail.
The mixture is dark adapted and counted for tritium activity using a liquid scintillation counting system.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT -2005 12
4.6.3.
Gross Beta A 200-250 milliliter sample is placed in a beaker. Five (5) milliliters of concentrated nitric (HNO3) acid is added and the sample is evaporated down to about twenty (20) milliliters. The remaining sample is transferred to a stainless steel planchet. The sample is heated to dryness and counted for gross beta in a gas flow proportional counter.
4.7.
Soil 4.7.1.
Gamma Spectroscopy The samples are sieved, placed in a one-liter plastic marinelli beaker, and weighed. The samples are then counted on a multichannel analyzer equipped with an HPGe detector. The resulting spectrum is analyzed by a computer for specific radionuclides.
- 5. Nuclear Instrumentation 5.1.
Gamma Spectrometer The Canberra Gamma Spectrometer consists of a Canberra System equipped with HPGe detectors having resolutions of 1.73 keV and 1.88 keV (as determined by full width half max with an energy of 0.5 keV per channel) and respective efficiencies of 21.5% and 38.4% (as determined by the manufacturer with Co-60). The Canberra System is used for all gamma counting. The system uses Canberra developed software to search, identify, and quantify the peaks of interest.
5.2.
Liquid Scintillation Spectrometer A Beckman LS-6500 Liquid Scintillation Counter is used for tritium determinations.
The system background averages approximately 15-17 cpm with a counting efficiency of approximately 40% using a quenched standard.
5.3.
Gas Flow Proportional Counter The Tennelec S5E is a low background gas flow proportional counter for gross beta analysis. The system contains an automatic sample changer capable of counting 50 samples in succession. Average beta background count rate is about 1-2 cpm with a beta efficiency of approximately 30% for Cs-137.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 13
- 6.
Isotopic Detection Limits and Reporting Criteria 6.1.
Lower Limits of Detection The lower limits of detection (LLD) and the method for calculation are specified in the PVNGS ODCM, Reference 4. The ODCM required a priori LLDs are presented in Table 6.1. For reference, a priori LLDs are indicated at the top of data tables for samples having required LLD values.
6.2.
Data Reporting Criteria All results that are greater than the Minimum Detectable Activity (MDA) (a posteriori LLD) are reported as positive activity with its associated 2ca counting error. All results that are less than the MDA are reported as less than values at the associated MDA. For example, if the MDA is 12 pCi/liter, the value is reported as <12.
Typical MDA values are presented in Table 6.3.
Occasionally, the PVNGS ODCM a priori LLDs may not be achieved as a result of:
0 0
0 Background fluctuations Unavoidably small sample sizes The presence of interfering radionuclides Self absorption corrections Decay corrections for short half-life radionuclides Other uncontrollable circumstances In these instances, the contributing factors will be noted in the table where the data are presented. A summary of deviations/abnormal events is presented in Table 2.3 and includes a description of any sample results that did not meet a priori LLD requirements.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 14
6.3.
LLD and Reporting Criteria Overview Making a reasonable estimate of the limits of detection for a counting procedure or a radiochemical method is usually complicated by the presence of significant background. It must be considered that the background or blank is not a fixed value but that a series of replicates would be normally distributed. The desired net activity is the difference between the gross and background activity distributions. The interpretation of this difference becomes a problem if the two distributions intersect as indicated in the diagram.
BACKGROUND GROSS If a sufficient number of replicate analyses are run, it is expected that the results would fall in a normal Gaussian distribution. Standard statistics allow an estimate of the probability of any particular deviation from the mean value. It is common practice to report the mean +/- one or two standard deviations as the result. In routine analysis, such replication is not carried out, and it is not possible to report a Gaussian standard deviation. With counting procedures, however, it is possible to estimate a Poisson standard deviation directly from the count. Data are commonly reported as the measured value +/- one or two Poisson standard deviations. The reported values are then considered to give some indication of the range in which the true value might be expected to occur.
A LLD is the smallest amount of sample activity that will yield a net count for which there is confidence at a predetermined level that activity is present. LLDs are calculated values for individual radionuclides based on a number of different factors including sample size, counting efficiency and background count rate of the instrument, the background and sample counting time, the decay time, and the chemical recovery of the analytical procedures. A minimum detectable activity value (MDA) is the smallest amount of activity that can be detected in an actual sample and uses the values obtained from the instrument and outcome of the analytical process.
Therefore, the MDA values may differ from the calculated LLD values if the sample size and chemical recovery, decay values, or the instrument efficiency, background, or count time differed from those used in the LLD calculation.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 15
The factors governing the calculation of the LLD and MDA values are discussed below:
- 1. Sample Size
- 2. Counting Efficiency The fundamental quantity in the measurement of a radioactive substance is the number of disintegrations per unit time. As with most physical measurements in analytical chemistry, an absolute measurement of the disintegration rate is seldom possible, rather it is necessary to compare the sample with one or more standards. The standards determine the counter efficiency that may then be used to convert sample counts per minute (cpm) to disintegrations per minute (dpm).
- 3. Background Count Rate Any counter will show a certain counting rate without a sample in position. This background counting rate comes from several sources: 1) natural environmental radiation from the surrounding materials, 2) cosmic radiation, and 3) the natural radioactivity in the counter material itself. The background counting rate will depend on the amounts of these types of radiation and the sensitivity of the counter to the radiation.
- 4. Background and Sample Counting Time The amount of time devoted to the counting of the background depends on the level of activity being measured. In general, with low level samples, this time should be about equal to that devoted to counting a sample.
- 5. Time Interval between Sample Collection and Counting Decay measurements are useful in identifying certain short-lived nuclides. The disintegration constant is one of the basic characteristics of a specific radionuclide and is readily determined, if the half-life is sufficiently short. To ensure the required LLDs are achieved, appropriate decay correction values are used to account for radioactive decay during transit time and sample processing.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 16
Table 6.1 ODCM REQUIRED LOWER LIMITS OF DETECTION (a priori)
AIRBORNE ANALYSIS/
WATER PARTICULATE or MILK VEGETATION NUCLIDE (pCi/liter)
GAS (pCi/m3)
(pCi/liter)
(pCi/kg, wet)
Gross Beta 4
0.01 H-3 2000*
Mn-54 15 Fe-59 30 Co-58, 60 15 Zn-65 30 Zr-95 30 Nb-95 15 I-131 1**
0.07 1
60 Cs-134 15 0.05 15 60 Cs-137 18 0.06 18 80 Ba-140 60 60 La-140 15 15 NOTES:
- If no drinking water pathway exists, a value of 3000 pCi/liter may be used.
- If no drinking water pathway exists, a value of 15 pCi/liter may be used.
This list does not mean that only these nuclides are to be detected and reported. Other peaks that are measurable and identifiable, together with the above nuclides, shall also be identified and reported.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 17
Table 6.2 ODCM REQUIRED REPORTING LEVELS AIRBORNE ANALYSIS/
WATER PARTICULATE MILK VEGETATION NUCLIDE (pCi/liter) or GAS (pCi/m3)
(pCi/liter)
(pCi/kg, wet)
H-3 20,000*
Mn-54 1,000 Fe-59 400 Co-58 1,000 Co-60 300 Zn-65 300 Zr/Nb-95 400 1-131 2**
0.9 3
100 Cs-134 30 10 60 1,000 Cs-137 50 20 70 2,000 Ba/La-140 200 300 NOTES:
- For drinking water samples. This is a 40CFRl41 value. If no drinking water pathway exists, a value of 30,000 pCi/liter may be used.
- If no drinking water pathway exists, a reporting level of 20 pCi/liter may be used.
The values in this table are (calendar) quarterly average values, as stated in the ODCM.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 18
Table 6.3 TYPICAL MDA VALUES ANALYSIS/
AIRBORNE VEGETATION NUCLIDE WATER MILK PARTICULATE or (pCi/kg, wet)
(pCi/liter)
(pCi/liter)
GAS (pCi/r 3)
Gross Beta 3
0.004 H-3 250 Mn-54 13 Fe-59 25 Co-58 11 Co-60 13 Zn-65 28 Zr-95 20 Nb-95 12 1-131 Oa 1
0.05 45 Cs-134 10 1
0.02 50 Cs-137 11 1
0.02 70 Ba-140 40 3
La-140 14 1
NOTES:
a - low level I-131 is not required since there is no drinking water pathway b - Based on 433 m3 volume PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 19
- 7.
Interlaboratory Comparison Program 7.1.
Quality Control Program APS maintains an extensive QA/QC Program to provide assurance that samples are collected, handled, tracked, and analyzed to specified requirements. This program includes appropriate elements of USNRC Regulatory Guide 4.15, Quality Assurance for Radiological Monitoring Programs (Normal Operations) - Effluent Streams and the Environment, Rev. 1. Included in the program are procedures for sample collection, preparation and tracking, sample analysis, equipment calibration and checks, and ongoing participation in an interlaboratory comparison program. Duplicate/replicate samples are analyzed to verify analytical precision and sample methodology.
Comprehensive data reviews are performed including trending of data where appropriate.
During 2005, APS analyzed the following sample types under the interlaboratory comparison program;
- Beta/Gamma/ in Air Filter
- I-131 inAir
- Beta in Water
- Gamma in Water
- Tritium in Water
- Gamma in milk 7.2.
Intercomparison Results APS participates in a crosscheck program using vendor supplied blind radionuclide samples. Results for the interlaboratory comparison program are presented in Table 7.1.
All crosscheck results reported in 2005 were within the established acceptance criteria.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT-2005 20
TABLE 7.1 INTERLABORATORY COMPARISON RESULTS I 1i Sample Analysis Nudide Known PVNGS sigma Resolution Ratio Accept/Reject Type Type VaValueValue lError Mixed Water Gamma 1-131 93.8 103 7
15 1.10 Accept E4645-111 Ce-141 101.2 110 14 8
1.09 Accept Cr-51 330 330 31 11 1.00 Accept Cs-134 104 90 6
15 0.87 Accept Cs-137 206 210 14 15 1.02 Accept Co-58 5.8
<MDA NA NA NA Accept Mn-54 136 148 13 11 1.09 Accept Fe-59 69.7 85 12 7
1.22 Accept Zn-65 169 173 15 12 1.02 Accept Co-60 158 164 8
21 1.04 Accept Tritium H-3 9100 7690 265 29 0.84 Accept E4649-111 Gross Beta gbeta 214 219 3
73 1.03 Accept E4644-111 Air Gross Beta gbeta 128 158 2.1 75 1.24 Accept E4646-111 Iodine Cart I-131 92.2 91 5.3 17 f 0.99 Accept E4647-111 Mixed Gamma Ce-141 81.8 89 4.4 20 1.09 Accept E4648-111 Cr-51 268 270 18.5 15 1.01 Accept Cs-134 84.2 76 4.9 16 0.90 Accept Cs-137 167 182 11.5 16 1.09 Accept Co-58 4.7 4.0 1.5 3
0.85 Accept Mn-54 111 125 8.4 15 1.13 p'Accept Fe-59 56.6 61 5.6 11 1.08
- Accept Zn-65 137 163 11 15 1.19
'Accept Co-60 128 139 7
20 1.08 Accept Mixed Milk Gamma 1-131 81 80 3
27 0.99
'Accept E4805-111 Ce-141 47.8 51 6
9 1.07, Accept Cr-51 41.2 36 13 3
0.87 Accept Cs-134 18.6 16 2
8 0.86 Accept Cs-137 40.4 43 6
7 1.06: :
Accept Co-58 16.5 16 3
5 0.97 Accept Mn-54 32.5 35 5
7 1.08 Accept Fe-59 17.6 15 4
4 0.85 Accept Zn-65 32.8 30 7
4 0.91 Accept L
Co-60 23.7 25 3
8 1.05 Accept PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 21
TABLE 7.1 INTERLABORATORY COMPARISON RESULTS Sample Analysis Nucide Known PVNGS sigma Resolution Ratio Accept/Reject Type Type Value Value Error Mixed Water Gamma I-131 53.1 57 5
11 1.07 Accept E4796-111 Ce-141 165 166 9
18 1.01 Accept Cr-51 142 168 22 8
1.18 Accept Cs-134 64.3 58 4
15 0.90 Accept Cs-137 139 143 9
16 1.03 Accept Co-58 57.1 57 5
11 1.00 Accept Mn-54 112 123 8
15 1.10 Accept Fe-59 60.6 58 7
8 0.96 Accept Zn-65 113 124 9
14 1.09 Accept Co-60 81.4 85 5
17 1.04 Accept Tritium H-3 T13200 11600 285 41 0.88 Accept E4800-111 Gross Beta gbeta 175 199 3
66 1.14 Accept E4795-111 Air Gross Beta gbeta 174 211 2.4 88 1.21 Accept E4797-111 Iodine Cart 1-131 1 73.7 79 4.5 18 1.07 Accept E4798-111 Mixed Gamma Ce-141 186 191 9
21 1.09 Accept E4799-111 Cr-51 160 162 20 8
1.08 Accept Cs-134 72.4 68 5
14 0.85 Accept Cs-137 157 166 11 15 1.13 Accept Co-58 64.2 75 6
13 1.10 Accept Mn-54 126 143 10 14 1.19 Accept Fe-59 68.3 76 8
10 1.28 Accept Zn-65 128 156 11 14 1.18 Accept Co-60 91.6 99 6
17 1.10 Accept
- calculated from PVNGS value/i sigma error value Acceptance CrIteria I Resolution
<4 Ratio 4-7 0.5-2.0 8-15 0.6-1.66 16-50 0.75-1.33 51-200 0.80-1.25
>200 0.85-1.18 From NRC Inspection Manual, Inspection Procedure 84750, "Radioactive Waste Treatment, And Effluent And Environmental Monitoring PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 22
- 8.
Data Interpretations and Conclusions Associated with the analytical process are potential random and systematic errors. Systematic errors can be caused by instrument malfunctions, incomplete precipitation, back scattering, and self-absorption. Random errors are beyond the control of the analyst.
Efforts are made to minimize both systematic and random errors in the data reported.
Systematic errors are minimized by performing reviews throughout the analysis. For example, instruments are checked routinely with radioactive sources, and recovery and self-absorption factors based on individual sample analyses are incorporated into the calculation equations where necessary. Random errors are reduced by comparing all data to historical data for the same site and performing comparisons between analytical results when available. In addition, when data do not appear to match historical results, analyses may be rerun on a separate aliquot of the sample to verify the presence of the activity. The acceptance of data is dependent upon the results of quality control samples and is part of the data review process for all analytical results.
The "plus or minus value" reported with each analytical result represents the counting error associated with the result and gives the 95% confidence (2a) interval around the data.
Most samples contain radioactivity associated with natural background/cosmic radioactivity (e.g. K-40, Th-234, and Be-7). Gross beta results for drinking water and air are due to natural background. Gamma emitting radionuclides. which can be attributed to natural background sources, are not indicated in this report.
Results and interpretation of the data for all of the samples analyzed during 2005 are presented in the following sections. Assessment of pre-operational and operational data revealed no changes to environmental radiation levels. There were no measurable radiological impacts on the environment due to PVNGS operations in 2005.
8.1.
Air Particulates Weekly gross beta results, in quarterly format, are presented in Tables 8.1 and 8.2.
Gross beta activity at indicator locations ranged from 0.015 to 0.066 pCi/m3. The associated counting error ranged from 0.001 to 0.004 pCi/m3. Mean quarterly activity is calculated using weekly activity over a thirteen (13) week period. Also presented in the tables are the weekly mean values of all the sites as well as the percent relative standard deviation (RSD %) for the idata. The findings are consistent with pre-operational baseline and previous operational results. The results are summarized in Table 11.1.
Table 8.3 displays the results of gamma spectroscopy on the quarterly composites. No Cs-134 or Cs-137 was observed.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 23
8.2.
Airborne Radioiodine Tables 8.4 and 8.5 present the quarterly radioiodine results. No airborne radioiodine was observed in any of the samples.
8.3.
Vegetation Table 8.6 presents gamma isotopic data for the vegetation samples. No gamma emitting radionuclides were observed in any of the samples.
8.4.
AMik Table 8.7 presents gamma isotopic data for the goat milk samples. No gamma emitting radionuclides were observed in any of the samples.
8.5.
Drinking Water Samples were analyzed for gross beta, tritium, and gamma emitting radionuclides.
Results of these analyses are presented in Table 8.8. No tritium or gamma emitting radionuclides were detected in any samples. Gross beta activity ranged from less than detectable to a high of 5.0 pCi/liter (Gavette residence, June composite).
8.6.
Groundwater Groundwater samples were analyzed for tritium and gamma emitting radionuclides.
Results obtained from the analysis of the samples are presented in Table 8.9.
No tritium or gamma emitting radionuclides were observed in any of the samples.
8.7.
Surface Water Surface water samples from the Reservoir and Evaporation Ponds were analyzed for tritium and gamma emitting radionuclides. The Reservoir contains processed sewage water from the City of Phoenix and is approximately 80 acres in size. The two Evaporation Ponds receive mostly circulating water from main turbine condenser cooling and are about 250 acres each. Results are presented in Table 8.10. 1-131 was observed in Evaporation Pond # 1 in three (3) monthly composite samples (7-19 pCi/liter) and one (1) of the Reservoir monthly composite samples (13 pCi/liter). 1-131 is a result of radiopharmaceutical I-131 in the Phoenix sewage effluent.
Tritium was routinely observed in Evaporation Ponds 1 and 2. The highest concentration in Evaporation Pond #1 was 2038 pCi/liter and the highest concentration in Evaporation Pond #2 was 1763 pCi/liter. Tritium was not identified in the Reservoir. The tritium identified in the Evaporation Ponds has been attributed to plant gaseous effluent releases and secondary plant liquid releases.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT-2005 24
WRF influent (Phoenix sewage effluent) samples collected by the WRF were analyzed for gamma emitting radionuclides and tritium. The results, presented in Table 8.10, demonstrate that I-131 was observed routinely. The highest I-131 concentration was 158 pCi/liter (week of May 31st). The Arizona Radiation Regulatory Agency was contacted each week that this concentration exceeded 100 pCi/liter (one time in 2005).
None of the samples analyzed indicated the presence of tritium.
Table 8.10 also presents gamma spectroscopy and tritium measurements of samples collected from Sedimentation Basin #2. This basin collects rain waters from site runoff and was dry for most of the year. Tritium was detected in nine (9) samples ranging from 387 to 958 pCi/liter. The tritium in this basin has been attributed to plant gaseous effluent releases and secondary plant liquid releases.
8.8.
Sludge and Sediment 8.8.1.
WEJF Centrifuge waste sludge Sludge samples were obtained from the WRF centrifuge and analyzed by gamma spectroscopy. I-131 in the WRF waste centrifuge sludge is consistent with historical values
- and, as previously discussed, is due to radiopharmaceuticals in the WRF influent. 1-131 was present in all forty-nine (49) samples ranging from 342 to 2121 pCi/kg.
In-i 11 was also identified in the sludge in twelve (12) samples. The highest concentration was 86 pCi/kg. It was previously established that In-Ill is in use in the Phoenix area as a radiopharmaceutical. Results for WRF centrifuge waste sludge can be found in Table 8.11.
8.8.2.
Evaporation Ponds #1 and #2 sediment A set of ten (10) Evaporation Pond sediment samples indicated low levels of Cs-137 in three (3) samples from Evaporation Pond #2. The concentrations were consistent with historical values. Sample results can be found in Table 8.11.
8.8.3.
Cooling Tower sludge/scale Sludge/scale originating from the Unit cooling towers, piping, and/or circulating water canals was disposed of in the WRF sludge landfill during 2005. Sample results can be found in Table 8.11.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 25
8.8.4.
Sedimentation Basin #2 sediment Sediment samples were collected from Sedimentation Basin #2, when there was no water present, and analyzed for gamma emitting radionuclides. No gamma emitting radionuclides were detected in any of the samples. Sample results can be found in Table 8.11.
8.9.
Data Trends Figures 8.1-8.5 present data in graphical format. Historical data are displayed for comparison where practical.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 26
TABLE 8.1 PARTICULATE GROSS BETA IN AIR 1st - 2nd QUARTER ODCM required samples denoted by
- units are pCi/r 3 (contr)
(control)
START Week #
DATE STOP DATE Site Site Site Site Site Site Site 4
6A*
7A 14A*
15*
17A 21 Site 29*
Site Site 35 40*
Mean RSD (%)
1 2
3 4
5 6
7 8
9 10 I 1 12 13 27-Dec-04 4-Jan-05 I -Jan-05 18-Jan-05 25-Jan-05 I-Feb-05 8-Feb-05 14-Feb-05 22-Feb-05 1-Mar-05 8-Mar-05 15-Mar-05 22-Mar-05 4-Jan-05 0.027 1 -Jan-05 0.024 18-Jan-05 0.029 25-Jan-05 0.048 1-Feb-05 0.027 8-Feb-05 0.034 14-Feb-05 0.021 22-Feb-05 0.023 1-Mar-05 0.018 8-Mar-05 0.023 15-Mar-05 0.041 22-Mar-05 0.028 29-Mar-05 0.019 0.030 N/A 0.024 0.026 0.025 0.026 0.025 0.023 0.024 0.026 0.026 N/A 0.020 0.025 0.022 0.021 invalid a invalid
- 0.019 0.022 0.029 0.046 0.028 0.033 0.020 0.024 0.016 0.021 0.040 0.026 0.018 N/A 0.026 0.031 0.027 0.028 N/A 0.048 0.046 0.037 0.042 N/A 0.027 0.028 0.028 0.024 N/A 0.036 0.034 0.033 0.030 N/A 0.022 0.022 0.019 0.022 N/A 0.020 0.022 0.021 0.020 N/A 0.017 0.017 0.015 0.017 N/A 0.023 0.021 0.021 0.020 N/A 0.032 0.038 0.040 0.035 N/A 0.023 0.025 0.025 0.024 N/A 0.017 0.017 0.018 0.017 0.029 0.040 0.027 0.031 0.021 0.022 0.018 0.021 0.040 0.025 0.018 0.027 0.046 0.026 0.035 0.020 0.021 0.016 0.022 0.040 0.025 0.017 0.025 0.028 0.046 0.044 0.025 0.027 0.034 0.033 0.019 0.021 0.020 0.021 0.016 0.017 0.023 0.022 0.037 0.038 0.026 0.025 0.017 0.018 8.1 11.8 6.6 8.6 5.3 5.6 5.9 6.6 6.0 5.2 7.8 5.5 4.1 Mean I
=,
- =
-E'i"'W, 4,;
.................. b.5 0.028 0.027 N/A 0.026 0.027 0.025 0.025
=
L nduarter 71 Site Site Site Site Site Site Site 4
6A*
7A 14A*
15*
17A 21 0.026 0.027 0.025 0.026 3.7 st START Week #
DATE STOP DATE Site 29*
Site Site 35 40*
Mean RSD (%)
14 15 16 17 18 19 20 21 22 23 24 25 26 29-Mar-05 5-Apr-05 I -Apr-05 18-Apr-05 26-Apr-05 3-May-05 10-May-05 17-May-05 24-May-05 31-May-05 7-Jun-05 14-Jun-05 21-Jun-05 5-Apr-05 0.015 1 1-Apr-05 0.023 18-Apr-05 0.039 26-Apr-05 0.025 3-May-05 0.022 10-May-05 0.022 17-May-05 0.029 24-May-05 0.031 31-May-05 0.032 7-Jun-05 0.035 14-Jun-05 0.029 21-Jun-05 0.031 28-Jun-05 0.025 0.022 0.025 0.036 0.027 0.019 0.021 0.028 0.035 0.033 0.036 0.024 0.034 0.037 N/A 0.020 0.023 0.023 0.022 N/A 0.021 - 0.021 0.025 0.022 N/A 0.036 0.035 0.039 0.032 N/A 0.023 0.025 0.020 0.025 N/A 0.020 0.021 0.022 0.020 N/A 0.023 0.022 0.019 0.020 N/A 0.023 0.026 0.026 0.025 0.033 0.031 0.030 0.032 0.030 0.031 0.031 0.033 0.031 0.034 0.034 0.031 0.034 0.035 0.033 0.025 0.028 0.027 0.027 0.026 0.031 0.030 0.030 0.035 0.032 0.037 0.026 0.038 0.035 0.035 0.019 0.023 0.034 0.023 0.018 0.025 0.027 0.034 0.034 0.035 0.025 0.031 0.036 0.021 0.021 0.034 0.025 0.022 0.022 0.026 0.031 0.031 0.034 0.025 0.031 0.040 0.020 0.021 0.020 0.022 0.033 0.035 0.022 0.024 0.020 0.020 0.020 0.022 0.026 0.026 0.028 0.032 0.034 0.032 0.033 0.034 0.027 0.026 0.028 0.031 0.036 0.035 12.2 8.1 6.9 8.7 7.0 8.4 6.5 6.6 4.2 4.2 6.0 6.4 14.4 Mean 0.028 0.029 N/A 0.026 0.028 0.028 0.027 0.028 0.028 0.027 0.028 2.9 a sample invalidated due to low value and high system RSD % (24.4)- technician stated the sample was wet from rain PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 27
TABLE 8.2 PARTICULATE GROSS BETA IN AIR 3rd - 4th QUARTER ODCM required samples denoted by
- units are pCi/m3 3cd Quart (control)
Aiil START DATE STOP DATE Site Site Site Site Site Site 17A Site Site Site Site 21 29*
35 40*
Mean RSD (%)
Week #
4 6A*
7A 14A*
15*
27 28 29 30 31 32 33 34 35 36 37 38 39 28-Jun-05 5-Jul-05 12-Jul-05 19-Jul-05 26-Jul-05 2-Aug-05 9-Aug-05 16-Aug-05 23-Aug-05 30-Aug-05 6-Sep-05 13-Sep-05 19-Sep-05 5-Jul-05 0.030 12-Jul-05 0.027 19-Jul-05 0.037 26-Jul-05 0.025 2-Aug-05 0.023 9-Aug-05 0.029 16-Aug-05 0.027 23-Aug-05 0.030 30-Aug-05 0.027 6-Sep-05 0.039 13-Sep-05 0.033 19-Sep-05 0.034 27-Sep-05 0.038 0.029 0.032 0.034 0.026 0.020 0.029 0.026 0.031 0.025 0.038 0.032 0.033 0.040 0.029 0.028 0.029 0.030 0.037 0.036 0.026 0.025 0.023 0.022 0.027 0.028 0.027 0.027 0.030 0.032 0.026 0.028 0.038 0.035 0.033 0.032 0.034 0.030 0.033 0.035 0.030 0.028 0.039 0.027 0.023 0.029 0.030 0.033 0.029 0.036 0.038 0.034 0.037 0.027 0.030 0.037 0.025 0.023 0.028 0.030 0.032 0.028 0.035 0.033 0.034 0.034 0.026 0.034 0.038 0.027 0.021 0.028 0.028 0.030 0.025 0.036 0.033 0.032 0.035 0.030 0.026 0.042 0.025 0.022 0.028 0.028 0.034 0.027 0.039 0.034 0.035 0.036 0.026 0.033 0.036 0.026 0.022 0.028 0.028 0.033 0.026 0.034 0.033 0.031 0.034 0.027 0.031 0.035 0.027 0.022 0.026 0.030 0.032 0.026 0.034 0.031 0.033 0.034 0.028 0.030 0.037 0.026 0.022 0.028 0.028 0.032 0.027 0.036 0.033 0.033 0.036 5.7 8.6 6.0 3.4 4.5 3.4 5.2 4.5 5.0 5.4 5.6 4.7 6.1
=
Mean 0.031 0.030 0.030 0.030 0.032 0.030 0.030 0.031 0.030 0.030 0.030 2.0 (control)
START STOP Site Site Site Site Site Site Site Site Site Site Week #
DATE DATE 4
6A*
7A 14A*
15*
17A 21 29*
35 40*
Mean RSD (%)
40 41 42 43 44 45 46 47 48 49 50 51 52 27-Sep-05 4-Oct-05 I I-Oct-05 19-Oct-O5 25-Oct-05 I-Nov-05 8-Nov-05 15-Nov-05 22-Nov-05 29-Nov-05 6-Dec-05 13-Dec-05 20-Dec-05 4-Oct-05 I -Oct-05 19-Oct-05 25-Oct-05 I-Nov-05 8-Nov-05 15-Nov-05 22-Nov-05 29-Nov-05 6-Dec-05 13-Dec-05 20-Dec-05 27-Dec-05 0.038 0.033 0.041 0.035 0.046 0.054 0.037 0.031 0.042 0.029 0.056 0.066 0.051 0.043 0.032 0.038 0.036 0.046 0.055 0.037 0.033 0.043 0.034 0.060 0.070 0.054 0.037 0.026 0.037 0.035 0.044 0.053 0.034 0.031 0.040 0.029 0.052 0.062 0.046 0.037 0.032 0.038 0.034 0.044 0.053 0.034 0.030 0.039 0.028 0.050 0.057 0.043 0.040 0.030 0.035 0.034 0.046 0.052 0.035 0.033 0.038 0.031 0.050 0.059 0.042 0.039 invalid a 0.041 0.040 0.044 0.054 0.033 0.030 0.036 0.026 0.051 0.058 0.042 0.038 0.031 0.034 0.040 0.044 0.049 0.036 0.032 0.041 0.029 0.051 0.060 0.043 0.038 0.035 0.034 0.038 0.046 0.054 0.036 0.034 0.041 0.030 0.051 0.063 0.047 0.037 0.033 0.036 0.037 0.045 0.048 0.035 0.032 0.040 0.027 0.048 0.060 0.041 0.038 0.032 0.034 0.034 0.043 0.051 0.035 0.029 0.040 0.028 0.048 0.060 0.036 0.039 0.032 0.037 0.036 0.045 0.052 0.035 0.032 0.040 0.029 0.052 0.062 0.045 4.8 7.9 7.3 6.5 2.5 4.4 3.7 5.0 5.0 7.7 7.1 6.4 11.7 Mean AnnualAverage 0.043 0.045 0.040 0.040 0.040 0.041 0.041 0.042 0.040 0.039 0.032 0.033 0.035 0.030 0.032 0.031 0.031 0.032 0.031 0O30 0.041 0.032 4.1 4.2 a Sample invalidated due to equipment malfunction that prevented accurate volume determination (pump not running, EfM running)
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 28
TABLE 8.3 GAMMA IN AIR FILTER COMPOSITES ODCM required samples denoted by
- units are pCi/m3 QUARTER ENDPOINT NUCLIDE Site 4
(control)
Site 6A*
Site 7A Site Site Site Site Site 14A*
15*
17A 21 29*
Site Site 35 40*
29-Mar-05 28-Jun-05 27-Sep-05 27-Dec-05 Cs-134 Cs-137 Cs-134 Cs-137 Cs-134 Cs-137 Cs-134 Cs-137
<0.0016
<0.0013
<0.0024
<0.0035
<0.0017
<0.0030
<0.0025
<0.0036
<0.0021
<0.0040
<0.0020
<0.0036
<0.0030
<0.0041
<0.0053
<0.0039 N/A N/A N/A N/A
<0.0019
<0.0025
<0.0025
<0.0031
<0.0022
<0.0032
<0.0011
<0.0032
<0.0021
<0.0033
<0.0026
<0.0035
<0.0022
<0.0030
<0.0024
<0.0042
<0.0023
<0.0019
<0.0038
<0.0022
<0.0041
<0.0025
<0.0036
<0.0018
<0.0042
<0.0021
<0.0038
<0.0026
<0.0034
<0.0021
<0.0049
<0.0017
<0.0029
<0.0021
<0.0011
<0.0019
<0.0042
<0.0024
<0.0036
<0.0021
<0.0038
<0.0027
<0.0031
<0.0020
<0.0029
<0.0019
<0.0036
<0.0020
<0.0033
<0.0015
<0.0036
<0.0025
<0.0018
<0.0012
<0.0037
<0.0028
<0.0033
<0.0042
<0.0038
<0.0030 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 29
TABLE 8.4 RADIOIODINE IN AIR 1st - 2nd QUARTER RADIOJODINE IN AIR 1st - 2nd QUARTER ODCM required samples denoted by
- units are DCi/m3 (control) 0.07 START STOP Site Site Site Site Site Site Site Site Site Site Week #
DATE DATE 4
6A*
7A 14A*
15*
17A 21 29*
35 40*
1 27-Dec-04 4-Jan-05
<0.027
<0.057 N/A
<0.032
<0.025
<0.038
<0.028
<0.036
<0.027
<0.039 2
4-Jan-05 1 1-Jan-05
<0.035
<0.042 N/A
<0.044
<0.029
<0.065
<0.045
<0.051
<0.042
<0.034 3
11-Jan-05 18-Jan-05
<0.035
<0.042 N/A
<0.048
<0.058
<0.052
<0.028
<0.051
<0.030
<0.068 4
18-Jan-05 25-Jan-05
<0.031
<0.036 N/A
<0.039
<0.038
<0.034
<0.034
<0.026
<0.047
<0.033 5
25-Jan-05 1-Feb-05
<0.025
<0.058 N/A
<0.054
<0.033
<0.032
<0.026
<0.033
<0.026
<0.033 6
1-Feb-05 8-Feb-05
<0.044
<0.050 N/A
<0.015
<0.047
<0.051
<0.044
<0.015
<0.042
<0.053 7
8-Feb-05 14-Feb-05
<0.057
<0.035 N/A
<0.039
<0.035
<0.049
<0.052
<0.039
<0.038
<0.049 8
14-Feb-05 22-Feb-05
<0.029
<0.043 N/A
<0.048
<0.052
<0.037
<0.043
<0.057
<0.027
<0.032 9
22-Feb-05 1-Mar-05
<0.041
<0.054 N/A
<0.055
<0.054
<0.042
<0.032
<0.042
<0.054
<0.042 10 1-Mar-05 8-Mar-05
<0.035
<0.052 N/A
<0.035
<0.051
<0.053
<0.069
<0.053
<0.046
<0.059 11 8-Mar-05 15-Mar-05
<0.033
<0.058 N/A
<0.049
<0.031
<0.052
<0.041
<0.064
<0.031
<0.060 12 15-Mar-05 22-Mar-05
<0.057
<0.034 N/A
<0.056
<0.042
<0.044
<0.032
<0.012
<0.036
<0.012 13 22-Mar-05 29-Mar-05
<0.040
<0.057 N/A
<0.028
<0.048
<0.035
<0.065
<0.037
<0.057
<0.034 i WERaEt.
(control)
START STOP Site Site Site Site Site Site Site Site Site Site Weekr
- DATE:
DATE 4
6A*
7A 14A*
15*
17A 21 29*
35 40*
14 15 16 17 18 19 20 21 22 23 24 25 26 29-Mar-05 5-Apr-05 s 18-Apr-05
- .26-Apr-05 3-May-05 10-May-05 17-May-05 24-May-05 31-May-05 7-Jun-05 14-Jun-05 21-Jun-05 5-Apr-05
<0.034 11-Apr-05
<0.041 18-Apr-05
<0.047 26-Apr-05
<0.033 3-May-05
<0.043 10-May-05
<0.061 17-May-05
<0.031 24-May-05
<0.035 31-May-05
<0.041 7-Jun-05
<0.037 14-Jun-OS
<0.036 21-Jun.05
<0.038 28-Jun-05
<0.040
<0.035
<0.050
<0.055
<0.037
<0.060
<0.028
<0.049
<0.052
<0.068
<0.048
<0.062
<0.056
<0.013 N/A N/A N/A N/A N/A N/A N/A
<0.032
<0.034
<0.054
<0.056
<0.055
<0.045
<0.035
<0.060
<0.028
<0.038
<0.037
<0.012
<0.049
<0.043
<0.037
<0.031
<0.037
<0.035
<0.039
<0.024
<0.037
<0.036
<0.033
<0.028
<0.039
<0.031
<0.068
<0.045
<0.065
<0.033
<0.050
<0.060
<0.061
<0.048
<0.049
<0.047
<0.048
<0.029
<0.052
<0.020
<0.037
<0.027
<0.044
<0.042
<0.035
<0.049
<0.033
<0.043
<0.041
<0.035
<0.054
<0.033
<0.045
<0.038
<0.049
<0.035
<0.012
<0.036
<0.045
<0.031
<0.035
<0.012
<0.032
<0.035
<0.035
<0.062
<0.047
<0.025
<0.055
<0.035
<0.054
<0.031
<0.041
<0.055
<0.036
<0.055 <0.034
<0.043
<0.029
<0.060
<0.035
<0.066
<0.051
<0.035
<0.033
<0.051
<0.036
<0.067
<0.045
<0.044
<0.069
<0.044
<0.045
<0.046
<0.037
<0.036
<0.030 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 30
TABLE 8.5 RADIOIODINE IN AIR 3rd - 4th QUARTER
__w a_
=
E ODCM required samples denoted by
- units are pCI/m3 3rd14~
J Quarerl
'control) 0.070 Site Site Site Site Site 6A*
7A 14A*
15*
17A START DATE STOP Site DATE 4
Site Site 21 29*
Site Site 35 40*
Week #
.. --- 11 27 28 29 30 31 32 33 34 35 36 37 38 20 28-Jun-05 5-Jut-0S 12-Jul-05 19-Jul-05 26-Jul-05 2-Aug-05 9-Aug-05 16-Aug-05 23-Aug-05 30-Aug-05 6-Sep-05 13-Sep-05 1 0-Sen-;
5-Jul-05 12-Jul-05 19-Jul-05 26-Jul-05 2-Aug-05 9-Aug-05 16-Aug-05 23-Aug-05 30-Aug-05 6-Sep-OS 13-Sep-05 19-Sep-05 27-Se05-nl
<0.039
<0.048
<0.042
<0.055
<0.036
<0.055
<0.048
<0.026
<0.033
<0.047
<0.032
<0.036
<0.031
<0.049
<0.026
<0.031
<0.057
<0.034
<0.031
<0.050
<0.043
<0.033
<0.040
<0.063
<0.051i
<0.043
<0.058
<0.029
<0.059
<0.041
<0.053
<0.042
<0.053
<0.031
<0.054
<0.020
<0.060
<0.036
<0.034
<0.024
<0.057
<0.033
<0.066
<0.040
<0.035
<0.033
<0.051
<0.032
<0.068
<0.031
<0.033
<0.020
<0.042
<0.026
<0.054
<0.023
<0.034
<0.034
<0.048
<0.042
<0.042
<0.020
<0.033
<0.042
<0.022
<0.028
<0.033
<0.027
<0.034
<0.032
<0.039
<0.034
<0.030
<0.040
<0.034
<0.033
<0.049
<0.022
<0.042
<0.031
<0.034
<0.034
<0.033
<0.036
<0.030
<0.029
<0.031
<0.032
<0.037
<0.032
<0.055
<0.041
<0.034
<0.035
<0.033
<0.030
<0.034
<0.028
<0.041
<0.029
<0.033
<0.038
<0.033
<0.043
<0.033
<0.037
<0.053
<0.037
<0.053
<0.019
<0.059
<0.038
<0.061
<0.036
<0.049
<0.015
<0.049
<0.063
<0.049
<0.049
<0.040
<0.050
<0.043
<0.045
<0.053
<0.030
<0.062
<0.034
<0.044
<0.054 J7 1 7
% v
-- ---, s--j
-~
vv A4thwmte (control) 0.070 START STOP Site Site Site Site Site Site Site Site Site Site Week #
DATE DATE 4
6A*
7A 14A*
15*
17A 21 29*
35 40*
40 41 42 43 44 45 46 47 48 49 50 51 52 27-Sep-05 4-Oct-05 I I-Oct-Os 19-Oct-05 25-Oct-05 I-Nov-05 8-Nov-05 15-Nov-05 22-Nov-05 29-Nov-05 6-Dec-05 13-Dec-05 20-Dec-05 4-Oct-05 I 1-Oct-05 19-Oct-05 25-Oct-05 I-Nov-05 8-Nov-05 15-Nov-05 22-Nov-05 29-Nov-05 6-Dec-05 13-Dec-05 20-Dec-05 27-Dec-05
<0.030
<0.048
<0.043
<0.041
<0.031
<0.037
<0.049
<0.068
<0.013
<0.040
<0.028
<0.042
<0.044
<0.058
<0.031
<0.035
<0.043
<0.056
<0.027
<0.050
<0.058
<0.044
<0.036
<0.037
<0.070
<0.023
<0.046
<0.035
<0.032
<0.052
<0.035
<0.050
<0.033
<0.069
<0.048
<0.033
<0.037 invalida
<0.039
<0.037
<0.049
<0.031
<0.036
<0.030
<0.037
<0.038
<0.048
<0.032
<0.011
<0.032
<0.063
<0.040
<0.039
<0.035
<0.064
<0.045
<0.049
<0.040
<0.032
<0.033
<0.042
<0.026
<0.012
<0.029
<0.033
<0.028
<0.054
<0.031
<0.044
<0.039
<0.050
<0.040
<0.057
<0.033
<0.053
<0.030
<0.060
<0.032
<0.034
<0.032
<0.055
<0.030
<0.052
<0.027
<0.036
<0.030
<0.059
<0.028
<0.055
<0.034
<0.052
<0.035
<0.043
<0.040
<0.042
<0.031
<0.012
<0.042
<0.032
<0.035
<0.034
<0.023
<0.058
<0.036
<0.046
<0.029
<0.044
<0.044
<0.056
<0.044
<0.055
<0.042
<0.045
<0.052
<0.013
<0.039
<0.058
<0.033
<0.014
<0.036
<0.057
<0.034
<0.050
<0.035
<0.057
<0.030
<0.048
<0.055
<0.035
<0.050 a Sample invalidated due to equipment malfimction that prevented accurate volume determination (pump not running, EFM running)
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 31
TABLE 8.6 VEGETATION ODCM required samples denoted by
- units are pCi/kg, wet
<60
<60
<80 LOCATION TYPE DATE 1-131 Cs-134 Cs-137 COLLECTED BRANCH RESIDENCE NO SAMPLES AVAILABLE (Site #52)*
green cabbage 14-Jan-05
<39
<49
<60 red cabbage 14-Jan-05
<50
<58
<54 DUNCAN savoy 14-Jan-05
<38
<33
<78 FAMILY green cabbage 15-Feb-05
<35
<38
<12 FARMS red cabbage 15-Feb-05
<41
<50
<76 (Site #62)*
red cabbage 11-Mar-05
<52
<54
<57 green cabbage 11-Mar-05
<46
<38
<63 green cabbage 13-Apr-05
<53
<38
<49 savoy 13-Apr-05
<48
<47
<51 red cabbage 13-Apr-05
<40
<45
<58 green cabbage 19-May-05
<36
<25
<42 green cabbage 10-Nov-05
<49
<55
<80 savoy 10-Nov-05
<39
<40
<37 red cabbage 10-Nov-05
<41
<44
<42 green cabbage 15-Dec-05
<49
<50
<72 savoy 15-Dec-05
<51
<43
<57 red cabbage 15-Dec-05
<39
<53
<58 MCCOY RESIDENCE NO SAMPLES AVAILABLE (Site #47)*
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 32
TABLE 8.7 MILK ODCM required samples denoted by
- units are pCi/liter SAMPLE LOCATION DATE COLLECTED
<1
<15
<18
<60
<15 1-131 Cs-134 Cs-137 Ba-140 La-140 PAINTER GOATS NO SAMPLES AVAILABLE (Site #51)*
14-Jan-05
<1
<1
<1
<3
<1 15-Feb-05
<1
<1
<1
<3
<1 11-Mar-05
<1
<1
<1
<3
<1 BARBER/ADAMS 19-Apr-05
<1
<1
<1
<3
<1 GOATS 15-Jul-05
<1
<1
<1
<3
<1 (Site #53)*
19-Aug-05
<1
<1
<1
<3
<1 16-Sep-05
<1
<1
<1
<3
<1 14-Oct-05
<1
<1
<1
<3
<1 18-Nov-05
<1
<1
<1
<3
<1 19-Au HERNANDEZ 23-Se GOATS 14-04 (Site #54) 16-De Adams replaced Barber effective 7-15-05 Hernandez replaced Branch effective 7-15-05 ig-05
- p-05 Act-05 ec-05
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
<3
<3
<3
<3
<1
<1
<1
<1 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 33
I x
I
@0 ia
'a-0C et 4
oi$2$$"
"o Wd W) W "O""W S~~~~2 9 9
C o>NnFN
TABLE 8.8 DRINKING WATER ODCM required samples denoted by
- units are pCilliter SAMPLE LOCATION
<000 MONTH
<15
<15
<30
<15
<30
<15
<30
<15
<15
<18
<60
<15 QTRLY
<4.0 ENDPOINT Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 H-3 Gross Beta McARTHUR RESIDENCE (SITE #46)*
25-Jan-05 22-Feb-05 29-Mar-05 26-Apr-05 31-May-05 28-Jun-05 26-Jul-05 30-Aug-05 27-Sep-05 25-Oct-05 29-Nov-05
<10
<11
<22
<14
<24
<10
<21
<11
<9
<13
<27
<12
<28
<13
<19
<11
<12
<13
<26
<13
<29
<13
<19
<12
<13
<12
<26
<14
<27
<13
<22
<11
<11
<11
<23
<13
<25
<14
<18
<11
<12
<11
<23
<13
<30
<12
<19
<11
<12
<10
<24
<12
<30
<13
<20
<12
<14
<12
<29
<13
<30
<12
<22
<10
<13
<13
<26
<15
<29
<15
<20
<12
<14
<13
<24
<12
<30
<14
<21
<11
<12
<10
<20
<15
<28
<13
<20
<12
<10
<12
<12
<12
<12
<13
<13
<12
<10
<11
<11
<13
<11
<12
<10
<13
<11
<13
<11
<14
<10
<13
<11
<13
<39
<15
<44
<15
<43
<12
<42
<15
<39
<11
<42
<12
<39
<12
<40
<12
<45
<14
<41
<10
<42
<10
<43
<13 27-Dec-05
<13
<12
<30
<13
<24
<13
<16
<12 j
<2.6
<264 3.1+/-1.5 4.0+/-+1.4 lo
<2.5
<271 3.8+/-1.3 2.7+/-1.4 F
4.2+/-1.4
<283 3.2+1.4 3.0+/-1.5 m
3.4+/-1.4
<251 3.0+/-1.4
<2.5 sm i
<2.2
<262
<2.3
<2.0
- 177]
<2.5
<270 2.2+/- 1.2 gm
<1 9
<270
<2.1
~
<2.3 j
<2.1
<252
<2.1 CHOWANEC RESIDENCE (SITE #49)
- 25-Jan-05 22-Feb-S05 29-Mar-05 26-Apr-05 31-May-05 28-Jun-05
--26-Jul-OS ;Aug-05
_ 27-Sep-05
.... -.... Oct-05 29-Nov-05 27-Dec-OS
<12
<10
<25
<12
<26
<14
<16
<12
<9
<13
<18
<15
<30
<12
<19
<9
<11
<10
<24
<15
<24
<12
<22
<10
<12
<11
<29
<15
<30
<12
<22
<10
<15
<12
<29
<14
<29
<12
<25
<13
<11
<9
<20
<14
<24
<12
<19
<9
<13
<13
<28
<14
<30
<14
<23
<13
<10
<11
<23
<12
<22
<11
<20
<11
<9
<12
<30
<13
<23
<13
<20
<12
<9
<10
<19
<15
<21
<11
<17
<8
<13
<9
<25
<12
<23
<10
<18
<9
<11
<10
<22
<14
<20
<12
<18
<10
<12
<13
<10
<11
<11
<12
<12
<14
<11
<14
<11
<10
<12
<12
<10
<11
<11
<12
<10
<10
<9
<10
<10
<9
<38
<15
<32
<11
<40
<14
<37
<11
<44
<12
<34
<15
<41
<15
<42
<14
<40
<12
<36
<13
<40
<15
<40
<15 PVNGS ANNUAL RADIOLOGICAL ENVIRONMETAL OPERATING REPORT - 2005 35
TABLE 8.9 GROUNDWATER ODCM required samples denoted by
- units are pCi/liter SAMPLE DATE
<15
<15
<30
<15
<30
<15
<0
<15
<15
<18
<60
<15
<2000 LOCATION I COLLECTED Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 H-3 WELL 27ddc (Site #57)*
25-Jan-05
<12
<12
<25
<14
<25
<13
<21
<13
<11
<13
<44
<15
<262 26-Apr-05
<13
<12
<28
<14
<30
<14
<20
<13
<12
<13
<41
<15
<266 26-Jul-05
<12
<9
<26
<15
<23
<13
<17
<10
<11
<12
<38
<15
<275 25-Oct-05
<12
<12
<20
<9
<27
<15
<19
<12
<11
<12
<44
<14
<263 WELL 34abb (Site #58)*
25-Jan-05
<14
<12
<27
<14
<30
<14
<22
<13
<12
<13
<52
<14
<269 26-Apr-05
<12
<10
<21
<12
<29
<13
<22
<11
<10
<11
<37 -
<15
<272 26-Jul-05
<12
<12
<19
<11
<26
<15
<22
<12
<10
<14
<48
<13
<276 25-Oct-05
<11
<10
<19
<11
<22
<11
<16
<10
<8
<11
<32
<15
<264 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 36
TABLE 8.10 SURFACE WATER ODCM required samples denoted by
- units are pCi/liter SAMPLE I MONTH
<15
<15
<30
<15
<30
<15
<30 LOCATION ENDPOINT Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95
<15
<15
<18
<60
<15 1-131 Cs-134 Cs-137 Ba-140 La-140
<3000 H-3 25-Jan-05
<13
<10
<20
<14
<19
<10
<17
<10
<9
<10
<31
<13 22-Feb-05
<13
<10
<26
<11
<23
<10
<18
<12
<10
<11
<36
<13 29-Mar-05
<12
<13
<29
<15
<30
<13
<24
<15
<12
<13
<45
<15 26-Apr-05
<13
<14
<29
<15
<27
<13
<20
<15
<12
<14
<45
<12 RESERVOIR 31-May-05
<13
<13
<24
<15
<30
<14
<21
<15
<13
<12
<48
<13 (Site #60)*
28-Jun-05
<9
<10
<23
<9
<24
<12
<19 13 +/- 7
<9
<10
<25
<13 26-Jul-05
<11
<11
<20
<13
<27
<10
<15
<11
<8
<11
<29
<12 30-Aug-05
<11
<12
<25
<15
<22
<13
<21
<14
<12
<12
<43
<12 27-Sep-05
<11
<11
<26
<14
<29
<14
<21
<13
<11
<13
<45
<13 25-Oct-05
<10
<9
<18
<10
<18
<12
<18
<10
<9
<11
<30
<13 29-Nov-05
<8
<9
<16
<11
<21
<10
<15
<11
<8
<10
<36
<11 27-Dec-05
<10
<8
<22
<15
<22
<11
<19
<11
<10
<10
<34
<11
<*S1% I EVAP POND 1 (Site #59)
- 25-Jan-05
<12
<11
<27
<12
<30
<13
<20 22-Feb-05
<11
<8
<27
<15
<23
<11
<18 29-Mar-05
<8
<8
<22
<9
<24
<9
<13 26-Apr-05
<9
<8
<17
<12
<18
<8
<15 31-May-05
<11
<13
<28
<15
<29
<14
<27 28-Jun-05
<12
<11
<21
<13
<30
<13
<16 26-Jul-05
<12
<10
<18
<13
<30
<12
<17 30-Aug-05
<13
<14
<27
<12
<29
<13
<19 27-Sep-05
<14
<12
<23
<15
<30
<14
<20 25-Oct-05
<14
<13
<29
<15
<30
<14
<24 29-Nov-05
<12
<10
<26
<11
<30
<13
<19 27-Dec-05
<14
<12
<30
<14
<28
<13
<21
<14 8+/-10 7+/-6
<9
<11
<8
<9
<10 19 +/- 10
<13
<11
<13
<11
<11
<9
<7
<13
<9
<10
<10
<10
<12
<11
<11
<13
<13
<8
<10
<15
<12
<11
<11
<15
<14
<12
<13
<44
<37
<25
<28
<42
<29
<33
<37
<43
<42
<38
<40
<11[
<15 L
<14 11
<11 m
<13 L
<13 12
<15
<12 16
<193 L
<11 20 EVAP POND2 (Site #63)
- 25-Jan-05
<9
<9
<21
<10
<23
<10
<18 22-Feb-05
<11
<11
<22
<14
<29
<12
<19 29-Mar-05
<12
<12
<26
<13
<30
<11
<23 26-Apr-05
<12
<10
<25
<15
<27
<11
<19 31-May-05
<10
<11
<21
<12
<30
<10
<16 28-Jun-05
<12
<11
<29
<14
<30
<12
<22 26-Jul-05
<12
<10
<24
<15
<30
<11
<20 30-Aug-05
<11
<10
<24
<12
<30
<10
<16 27-Sep-05
<12
<11
<23
<13
<30
<12
<21 25-Oct-05
<12
<10
<24
<12
<30
<12
<18 29-Nov-05
<13
<11
<25
<14
<30
<12
<21 27-Dec-05
<13
<12
<28
<15
<30
<13
<20
<8
<10
<13
<9
<9
<12
<12
<10
<11
<10
<13
<14
<8
<11
<12
<9
<10
<11
<11
<9
<11
<10
<11
<12
<11
<12
<15
<13
<12
<14
<14
<11
<13
<15
<14
<14
<30
<36
<43
<41
<31
<40
<38
<35
<33
<41
<45
<46
<10
<11 WEE
<12 1633 + 155
<12
<13 5
<11 1736 + 159
<9
<10 Lii
<11 1687 +/- 163
<15
<13
<1 15 1763 +/-154 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 37
TABLE 8.10 SURFACE WATER ODCM required samples denoted by
- units are pCI/liter DATE COLLECTED Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 H-3 SAMPLE LOCATION 9
WRF INFLUENT 4-Jan-05 1 1-Jan-05 18-Jan-05 25-Jan-05 1-Feb-05 8-Feb-05 15-Feb-05 22-Feb-05 1-Mar-05 8-Mar-05 15-Mar-05 22-Mar-05 29-Mar-05 5-Apr-05 12-Apr-05 18-Apr-05 3-May-05 10-May-05 17-May-05 24-May-05 31-May-05 7-Jun-05 14-Jun-05 21-Jun-05 28-Jun-05 5-Jul-05 12-Jul-05 19-Jul-05 26-Ju1-05 2-Aug-05
<8
<7
<21
<12
<18
<10
<15
<9
<9
<11
<12
<26
<15
<26
<12
<20
<12
<12
<12
<12
<22
<15
<27
<11
<17 28 12
<11
<10
<14
<22
<15
<27
<15
<22 45 12
<11
<12
<12
<25
<14
<26
<13
<19 24 11
<11
<11
<13
<23
<14
<26
<11
<18 12+/-9
<8
<11
<14
<28
<13
<30
<11
<25 39 12
<13
<13
<14
<26
<15
<28
<11
<18 56 12
<9
<14
<12
<28
<13
<29
<14
<20 43 16
<13
<11
<9
<25
<13
<30
<12
<21 61 14
<11
<14
<12
<28
<14
<29
<14
<26 29 15
<12
<15
<12
<20
<9
<24
<14
<21 30 10
<10
<12
<11
<24
<15
<30
<12
<20 44+/- 13
<10
<10
<10
<19
<9
<23
<10
<20 46 +/- 13
<10
<12
<10
<23
<15
<29
<10
<23 95 +/- 18
<12
<14
<14
<19
<11
<29
<15
<18 42+/- 13
<10
<14
<12
<27
<14
<30
<12
<23 40 +/- 13
<10
<11
<9
<22
<11
<22
<11
<19 58+/- 12
<10
<13
<13
<29
<15
<28
<12
<20 54 +/- 15
<13
<13
<14
<27
<13
<30
<12
<20 20+/- 14
<12
<11
<12
<24
<15
<27
<13
<19 158 +/-23
<10
<12
<12
<24
<15
<22
<12
<22 33 +/- 11
<11
<10
<11
<21
<10
<25
<11
<16 79+/- 15
<10
<12
<9
<29
<15
<30
<12
<17 26+/- 11
<9
<12
<12
<26
<11
<27
<15
<23 30 +/- 11
<13
<13
<10
<28
<13
<26
<11
<18 31 +/- 11
<11
<13
<13
<24
<14
<30
<11
<23 48+/- 14
<13
<12
<14
<27
<14
<29
<14
<23 22 +/- 11
<12
<14
<11
<26
<12
<29
<13
<20 38 +/- 12
<11
<11
<9
<22
<14
<28
<12
<19 10 +/- 9
<11
<9
<12
<13
<13
<12
<11
<14
<14
<15
<12
<12
<13
<12
<10
<13
<13
<14
<11
<15
<12
<12
<14
<11
<12
<13
<12
<13
<14
<12
<12
<30
<15 l
K I
<37
<13 1
<35
<1 1 L8
<43
<12
<282
<41
<14
<41
<15
<45
<9
<42
<12
<43
<13
<269
<41
<13
<44
<15
<32
<13
<38
<14
<271
<39
<15
<34
<14 a
<38
<14
<41
<10
<30
<15
<42
<13
<40
<14
<275
<40
<12
<41
<14
<34
<13
<42
<11 V
<43
<14
<275
<38
<13
<48
<14
<43
<15 4_
<37
<10
<284
<32
<13 M~ME.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 38
TABLE 8.10 SURFACE WATER ODCM required samples denoted by
- units are pCI/liter SAMPLE DATE LOCATION CLLECTED Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 WRF INFLUENT (continued) 9-Aug-05 16-Aug-05 23-Aug-05 30-Aug-05 6-Sep-05 13-Sep-05 20-Sep-05 27-Sep-05 4-Oct-05 10-Oct-05 25-Oct-05 1-Nov-05 8-Nov-05 15-Nov-05 29-Nov-05 6-Dec-05 13-Dec-05 20-Dec-05 27-Dec-05
<12
<11
<23
<14
<27
<11
<20
<11
<12
<22
<14
<29
<12
<22
<12
<11
<26
<14
<24
<11
<20
<12
<11
<19
<10
<30
<12
<18
<9
<9
<18
<11
<26
<11
<19
<11
<11
<17
<15
<27
<9
<16
<10
<10
<24
<11
<30
<11
<20
<13
<11
<25
<13
<30
<11
<21
<9
<10
<29
<11
<26
<11
<18
<13
<13
<27
<11
<25
<13
<19
<13
<10
<26
<14
<30
<12
<21
<12
<11
<25
<14
<30
<13
<16
<10
<10
<23
<12
<30
<11
<21
<11
<12
<22
<9
<23
<10
<13
<12
<10
<21
<11
<30
<12
<24
<14
<11
<22
<10
<30
<12
<22
<12
<12
<23
<13
<30
<10
<19
<15
<9
<28
<15
<27
<13
<22 12+/-8 15+/-9 41 +/- 12 43 +/- 13 25 +/- 10 25 +/- 10 39+/- 11 11 +/- 13 18i9 21 +/- 12
<15 42+/- 11 31 +/- 11 29+/-8 34 +/- 12 34 +/- 15 23+/-9 36+/- 11
<9
<12
<9
<12
<9
<11
<10
<9
<9
<11
<10
<9
<11
<9
<11
<12
<14
<35
<14
<45
<11
<31
<12
<36
<13
<31
<14
<44
<11
<38
<12
<39
<11
<34
<10
<47
<14
<38
<12
<41
<12
<40
<10
<31
<12
<41
<14
<42
<15
<12
<15
<11
<14
<14
<12
<11
<15
<15
<9
<11
<15
<15
<13
<13
<2 XX
<11
<12
<41
<9
<13
<37
<14
<15
<261 I.
SEDIMENT.
BASIN #2 4-Jan-05 1 1-Jan-05 18-Jan-05 25-Jan-05 1-Feb-05 8-Feb-05 14-Feb-05 22-Feb-05 1-Mar-05 8-Mar-05 15-Mar-05 22-Mar-05 29-Mar-05 5-Apr-05 1 1-Apr-05 16-Aug-05 19-Oct-05
<9
<10 <16
<12
<20
<10
<20
<11
<10
<19
<11
<28
<10
<19
<11
<9
<16
<13
<22
<10
<19
<13
<9
<26
<15
<22
<12
<20
<12
<12
<30
<12
<27
<14
<21
<11
<10
<25
<11
<30
<14
<25
<11
<12
<25
<12
<26
<12
<18
<12
- <10
<27
<14
<24
<12
<20
<12
<10
<28
<14
<29
<13
<20
<10
<9
<22
<13
<22
<10
<14
<15
<13
<23
<11
<29
<13
<21
<12
<12
<24
<14
<29
<8
<18
<13
<10
<22
<11
<30
<10
<21
<10
<11
<24
<9
<21
<9
<19
<10
<9
<19
<9
<20
<10
<18
<10
<11
<25
<15
<27
<12
<20
<15
<13
<23
<15
<28
<15
<24
<8
<7
<10
<11
<10
<14
<10
<11
<8
<8
<12
<7
<10
<8
<8
<10
<14
<10
<9
<9
<12
<10
<11
<10
<11
<11
<9
<14
<9
<10
<9
<7
<10
<13
<11
<33
<15
<10
<29
<15
<10
<37
<15
<14
<42
<13
<13
<44
<9
<13
<50
<12
<12
<40
<14
<14
<34
<15
<10
<31
<13
<11
<33
<12
<14
<46
<13
<12
<29
<13
<11
<39
<12
<12
<42
<15
<10
<29
<15
<13
<39
<14
<13
<45
<13
<278
<293
<278
<283
<287
<283
<288 878 + 175 621 + 185 907+/- 188 849+ 184 857+ 184 873 I 180 958 +/- 183 861 +/- 187
<292 387 +/- 165 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 39
TABLE 8.11 SLUDGE/SEDIMENT ODCM required samples denoted by
- units are pCi/kg, wet SAMPLE LOCATION DATE COLLECTED 1-131 Cs-134 Cs-137 In-111 WRF CENTRIFUGE WASTE SLUDGE 4-Jan-05 I 1-Jan-05 18-Jan-05 25-Jan-05 I-Feb-05 8-Feb-05 15-Feb-05 22-Feb-05 I-Mar-05 8-Mar-05 15-Mar-05 22-Mar-05 29-Mar-05 5-Apr-05 12-Apr-05 18-Apr-05 3-May-05 10-May-05 17-May-05 24-May-05 31-May-05 7-Jun-05 14-Jun-05 21-Jun-05 28-Jun-05 5-Ju1-05 12-Jul-05 19-Jul-05 26-Jul-05 2-Aug-05 9-Aug-05 16-Aug-05 23-Aug-05 30-Aug-05 6-Sep-05 13-Sep-05 19-Sep-05 27-Sep-05 4-Oct-05 I I-Oct-05 18-Oct-05 I-Nov-05 8-Nov-05 14-Nov-05 29-Nov-05 6-Dec-05 13-Dec-05 20-Dec-05 27-Dec-05 706
- 103 550 + 77 514479 545 4 85 759 : 106 664*95 618 93 1219 153 861 115 978 131 1444* 179 872 107 722 93 807 + 101 746
- 104 1368 167 753 94 590 78 536 80 599 :194 687
- 88 2121 + 246 1634* 180 1110: +/-142 739:1:93 838 :1113 612193 1372 158 1122 142 681 :196 360 54 467
- 76 342 51 848 ; 104 1155:1 145 1006 120 911 120 789 109 800 111 898 :1120 660 :195 563 *75 1843 :1204 1558 209 16231 194 795 + 99 699*: 94 770+ 113 1008:
134
<24
<18
<17
<32
<34
<30
<18
<24
<16
<27
<24
<15
<23
<25
<21
<25
<24
<21
<25
<25
<18
<27
<21
<29
<22
<16
<9
<28
<21
<25
<22
<20
<18
<19
<23
<23
<15
<16
<20
<21
<22
<18
<26
<36
<26
<22
<19
<26
<26
<26
<16
<21
<40
<38
<37
<26
<30
<24
<20
<20
<24
<17
<25
<20
<28
<21
<23
<34
<25
<25
<28
<19
<27
<22
<24
<36
<29
<21
<27
<25
<26
<23
<23
<26
<21
<26
<28
<19
<30
<25
<26
<20
<40
<28
<20
<21
<38
<22 21 *22 39 25 27*16 49*20 20*21 68*23 24*27 35*22 77*24 47 22 86*131 47:t27 IPVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 40
TABLE 8.11 SLUDGE/SEDIMENT ODCM required samples denoted by
- Units are pCi/kg, wet SAMPLE DATE LOCATION COLLECTED Cs-134 Cs-137 (N) 16-Nov-05
<15
<17 (E)
<10
<18 EVAP POND 1 (S)
<15
<15 (W)
<12
<18 (C)
<15
<18 (N) 16-Nov-05
<11 19+15 (E)
<15 29 +/- 13 EVAP POND 2 (S)
<12
<18 (W)
<14 17+11 (C)
<13
<18 SED. BASIN #2 (E) 2-Dec-05
<40
<56 SED. BASIN #2 (N) 2-Dec-05
<40
<79 COOLING TOWER SLUDGE/SCALE UNIT APPROXIMATE ISOTOPE ACTIVITY RANGE SAMPLE TYPE FRACTION OF SAMPLES CYCLE VOLUME (yd3)
(uCi/ml)
ABOVE MDA U3R10 30 -
n
<MDA louver scale/sludge none U2R 1 -
150 Co-60
<MDA to 1.07E-06 louver scale/sludge 25 of 26 U3Rl 1 155 Co-60 6.72E-07 to 1.32E-06 tower sludge 24 of 24 Cs-137
<MDA to 8.86E-08 7 of 24 U2R12 907 Co-60 3.72E-07 to 1.16E-06 tower/canal sludge 32 of 32 Cs-137
<MDA to 1.48E-07 30 of 32 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 41
FIGURE 8.1 HISTORICAL GROSS BETA IN AIR (WEEKLY SYSTEM AVERAGES)
Gross Beta in Air 1995-2005 1.000 0.100 T
0.010 0.001
- n
-0 I
I 0
I t-00 0 ° 0>
o:
mf " DR O.
O.
O.
O.
O.
?
a Q
Q 0
0%
0 0
u
-9 s
9
-r 9
9 U
4 4U Q
U Q
Q U
O.cI) 9U n
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 42
FIGURE 8.2 HISTORICAL GROSS BETA IN AIR (ANNUAL SITE TO SITE COMPARISONS) COMPARED TO PRE-OP control location Gross Beta in AirParticulates-pre-operational (1981-1985) 1995 1
1996
-1997 1998
-+-
1999 I - 2000 2001
-- 2002
- 2003 2004 2005 0.100 T 0.090 0.080 0.070-0.060 UT 0.050 -
I 0.040 0.030 0.020 0.010-0.000 -
i 4
I I
I I
I va
.Cd C-U U,
Cd 0%
CX In rUa CD 0W Sample Location PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 43
FIGURE 8.3 GROSS BETA IN DRINKING WATER NOTES:
MDA values plotted as activity (e.g. <2.3 is plotted as 2.3)
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 44
FIGURE 8.4 EVAPORATION POND TRITIUM ACT IVITY 5000 4000 3000 0.
2000 1000 0
'0
'0
'0D t-r-
t-cc cc 00 ai 0%,
O0% 0 0
m m.-r '
r cc a,
0
~
efq m
g 00 0
0 0
0 00 0
0000000 00L 0%
0%
0%
0%
w 0%
O' 0%
00 0 a 0%a 0%
a _
!£
-r
-r9 01 PVNGS ANNUAL RADIOLOGIC.AL ENVIRONMENTAL OPERATING REPORT - 2005 45
FIGURE 8.5 SEDIMENTATION BASIN #2 Cs-137 250 238 209 200 19 150 67 70 63600 50 40 4740
<MDA
<MDA 0
1976 1984 1990 1992 1993 1994 1995 1996 1997 1998 2001 2002 2003 2005 onsite onsite soilavg. soil avg.
(Sedimentation Basin #2 accepts site stormrunoff, no other ganma enitters present)
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 46
- 9.
Thermoluminescent Dosimeter (TLD) Results and Data The environmental TLD used at PVNGS is the Panasonic Model 812 Dosimeter. The Model 812 is a multi-element dosimeter combining two elements of lithium borate and two elements of calcium sulfate under various filters.
TLDs were placed in forty-nine locations from one to thirty-five miles from the PVNGS.
TLD locations are shown in Figures 2.1 and 2.2 and are described in Table 9.1. TLD results for 2005 are presented in Table 9.2. Historical environmental gamma radiation results for 1985 through 2005 are presented in graphical form on Figure 9.1 (excluding transit control TLD #45).
Figure 9.2 depicts the environmental TLD results from 2005 as compared to the pre-operational TLD results (excluding sites #41, #43, and #46-50 as they were either deleted or had no pre-op TLD at these locations for comparison). The site to site comparisons indicate a direct correlation with respect to pre-operational results. It is evident that the offsite dose, as measured by TLDs, has not changed since Palo Verde became operational.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 47
TABLE 9.1 TLD SITE LOCATIONS (distances and directions are relative to Unit 2 in miles)
TLD SITE 1
2 3
4 5
6*
7 8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 LOCATION E30 ENE24 E21 E16 ESEl 1 SSE31 SE7 SSE4 S5 SE5 ESE5 E5 Ni NNE2 NE2 ENE2 E2 ESE2 SE2 SSE2 S3 SSW3 W5 SW4 WSW5 SSW4 SWI WSW1 WI WNW1 NW1 NNW1 NW4 NNW5 NNW8 N5 NNE5 NES ENE5 N3 ESE3 N8 LOCATION DESCRIPTION Goodyear Scott-Libby School Liberty School Buckeye Palo Verde School APS Gila Bend substation Old US 80 and Arlington School Rd Southern Pacific Pipeline Rd.
Southern Pacific Pipeline Rd.
355k" Ave. and Elliot Rd.
3 3 9 h Ave. and Dobbins Rd.
339t Ave. and Buckeye-Salome Rd.
N site boundary NNE site boundary NE site boundary, WRF access road ENE site boundary E site boundary ESE site boundary SE site boundary SSE site boundary S site boundary SSW site boundary N of Elliot Rd N of Elliot Rd N of Elliot Rd S of Elliot Rd SW site boundary WSW site boundary W site boundary WNW site boundary NW site boundary NNW site boundary S of Buckeye Rd 395h Ave. and Van Buren St.
Tonopah Wintersburg Rd. and Van Buren St.
363rd Ave. and Van Buren St.
355& Ave. and Buckeye Rd.
343,d Ave. N of Broadway Rd.
Wintersburg Arlington School Ruth Fisher School PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 48
TABLE 9.1 TLD SITE LOCATIONS (distances and directions are relative to Unit 2 in miles)
TLD SITE 44*
45**
46 47 48 49 50 LOCATION ENE35 Onsite ENE30 E35 E24 ENEll WNW5 LOCATION DESCRIPTION El Mirage Central Laboratory (lead pig)
Litchfield Park School Littleton School Jackrabbit Trail Palo Verde Rd.
S of Buckeye-Salome Rd.
- Site #6 and site #44 are the control locations.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 49
TABLE 9.2 2005 ENVIRONMENTAL TLD RESULTS Units are mrem/std qtr
-L Ste st.Qurer 2d Quaer3rd Quarter t Quarter
- Average:
1 23.4 24.2 25.2 23.6 24.1 2
21.7 21.3 22.0 22.3 21.8 3
22.1 22.6 24.1 23.4 23.1 4
21.2 22.1 23.1 22.9 22.3 5
20.5 20.8 22.1 22.1 21.4 6 (control) 24.7 25.5 25.9 25.8 25.5 7
24.5 24.7 25.7 24.7 24.9 8
21.3 23.3 24.2 22.3 22.8 9
26.1 26.7 26.8 27.7 26.8 10 22.1 23.7 24.1 23.0 23.2 11 23.9 23.8 25.1 23.9 24.2 12 22.0 22.4 24.1 23.3 23.0 13 24.3 24.0 25.1 24.6 24.5 14 23.9 24.9 26.0 24.3 24.8 15 22.5 24.1 23.3 22.9 23.2 16 20.8 22.8 21.9 22.4 22.0 17 24.2 23.8 25.6 24.0 24.4 18 23.1 23.0 22.8 22.0 22.7 19 24.0 24.8 25.3 25.2 24.8 20 23.0 23.4 24.2 24.5 23.8 21 24.4 24.2 26.2 25.3 25.0 22 24.5 25.9 26.8 25.4 25.7 23 21.5 22.3 22.2 22.3 22.1 24 21.1 20.9 22.8 22.3 21.8 25 21.3 22.1 23.4 21.9 22.2 26 25.6 26.7 28.3 26.4 26.8 27 26.0 25.9 28.9 26.9 26.9 28 23.4 25.7 27.0 26.1 25.6 29 23.7 24.3 24.3 23.7 24.0 30 24.7 26.4 26.3 25.4 25.7 31 21.4 22.9 23.8 22.4 22.6 32 23.6 25.3 25.8 24.1 24.7 33 24.5 26.3 25.4 24.6 25.2 34 27.0 27.4 27.7 26.6 27.2 35 28.6 31.2 31.5 30.3 30.4 36 23.7 24.2 25.8 25.2 24.7 37 23.3 22.1 23.8 22.5 22.9 38 26.7 27.1 28.0 26.5 27.1 39 23.0 24.2 24.1 23.4 23.7 40 24.4 24.6 25.0 24.2 24.6 41 22.5 23.4 23.8 22.1 23.0 42 25.5 26.0 27.0 26.1 26.2 44 (control) 19.0 20.4 20.4 18.8 19.7 45(transitcontrol) 5.6 5.8 5.7 5.1 5.6 46 26.8 27.5 27.0 26.2 26.9 47 21.5 22.4 23.1 23.0 22.5 48 23.4 23.9 24.8 22.9 23.8 49 22.5 22.3 23.4 22.4 22.7 50 18.2 19.0 19.4 18.5 18.8 PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 50
FIGURE 9.1 NETWORK ENVIRONMENTAL TLD EXPOSURE RATES 30.0 nmR/std qtr
-BASELINE
- - - - 10 YEAR MEAN 28.0 26.0 24.0 E
V2. - v 22.0 20.0-4n
%O t-0O f
I tn
'I t-w m
0x m
c t
u oo Co 0%
0%
0%
Cy 0
9 0 9
o I
Ih 1I ta S
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 51
FIGURE 9.2 ENVIRONMENTAL TLD COMPARISON - PRE-OPERATIONAL VS 2005 35 -
Control ILD 30 20 l, 20 Control T 15 1-Pre-op (1984-1985) p 10 -
2005 Average Transit Control TID 5
1 3
5 7
9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 42 45 TLD Number TLD #41 monitoring location was deleted in June, 2000 due to school closing (this TLD was placed at new school in 2004)
TLD #43 iioitiitig location was deleted in 1994 due to school closing TLDs #46-50 are not included since they were not included in the pre-op monitoring program PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT -2005 52
- 10.
Land Use Census 10.1.
Introduction In accordance with the PVNGS ODCM, Section 6.2, the annual Land Use Census was performed within five miles of Unit 2 containment in May-June 2005.
Observations were made in each of the 16 meteorological sectors to determine the nearest milking animals, residences, and gardens of greater than 500 square feet. This census was completed by driving the roads and speaking with residents.
The results of the Land Use Census are presented in Table 10.1 and discussed below.
The directions and distances listed are in sectors and miles from the Unit 2 containment.
10.2.
Census Results Nearest Resident There were two (2) changes in nearest resident status. Dose calculations indicated the highest dose to be 0.167 mrem.
Milk Animal There were no changes in nearest milk animal (goat) status. Dose calculations indicated the highest dose to be 0.360 mrem. However, two (2) sample locations, one control and one indicator location, changed due to unavailability of samples.
Vegetable Gardens There were two (2) changes in nearest garden status (two former gardens are no longer there). Dose calculations indicated the highest dose to be 0.335 mrem.
See Table 10.1 for a summary of the specific results and Table 2.1 for current sample locations.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT.2005 53
TABLE 10.1 2005 LAND USE CENSUS (Distances and directions are relative to Unit 2 in miles)
NEAREST NEAREST NEAREST CALCULATED DOSE SECTOR RESIDENT GARDEN MILK ANIMAL (mrem)
CHANGE (COW/GOAT)
FROM 2004 N
1.55 NONE NONE Resident 4.78E-02 Garden NNE 1.52 2.05 2.05 Resident 7.99E-02 Garden 2.87E-01 Milk 3.60E-01 NE 2.16 NONE 3.91 Resident 1.15E-01 Milk 3.30E-01 ENE 2.67 4.72 4.84 Resident 6.61E-02 Garden 1.28E-01 Milk 1.46E-01 E
2.81 NONE NONE Resident 7.39E-02 ESE 1.95 3.85 NONE Resident 1.67E-01 Resident Garden 3.35E-01 SE 4.10 NONE NONE Resident 7.81E-02 SSE NONE NONE NONE NA S
NONE NONE NONE NA SSW NONE NONE NONE NA SW 1.39 NONE NONE Resident 1.45E-01 WSW 0.75 NONE NONE Resident 1.27E-01 W
0.70 NONE NONE Resident 9.37E-02 WNW 2.67 NONE NONE Resident 2.02E-02 NW 0.93 NONE NONE Resident 5.71E-02 Resident NNW 1.30 NONE NONE Resident 4.66E-02 Garden COMMENTS:
Dose calculations were performed using the GASPAR code and 2004 meteorological data and source term. Dose reported for each location is the total for all three PVNGS Units and is the highest individual dose identified (organ, bone, total body, or skin).
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 54
- 11.
Summary and Conclusions The conclusions are based on a review of the radio assay results and background gamma radiation measurements for the 2005 calendar year. Where possible, the data were compared to pre-operational sample data.
All sample results for 2005 are presented in Tables 8.1-8.11 and do not include observations of naturally occurring radionuclides. with the exception of gross beta in air and gross beta in drinking water. Table 11.1 summarizes the ODCM required samples and is in the format required by the NRC BTP on Environmental Monitoring.
1-131 concentrations identified on occasion in the Evaporation Ponds, WRF Influent, WRF Centrifuge sludge, and Reservoir is the result of offsite sources and appears in the effluent sewage from Phoenix. The levels of 1-131 detected in these locations are consistent with levels identified in previous years.
Tritium concentrations identified in surface water onsite have been attributed to PVNGS gaseous effluent releases and secondary plant releases. These concentrations are consistent with historical values.
Natural background radiation levels are consistent with measurements reported in previous Pre-operational and Operational Radiological Environmental annual reports, References 1 and 2.
There were no measurable radiological impacts on the environment due to PVNGS operations in 2005.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT -2005 55
TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL
SUMMARY
Palo Verde Nuclear Generating Station Docket Nos. STN 50-528/529/530 Maricopa County, Arizona Calendar Year 2005 Medium or Lower Limit of All Indicator Location with Highest Annual Mean Control Pathway Type and Total Detection Locations Locations Number of Sampled Number of (LLD)
Name Mean (fl Nonroutine (Unit of Analyses (from Table Mean (f)a Distance and Range Mean (f)a Reported Measurement)
Performed 6.1)
Range Direction Range Measurements Direct Radiation TLD - 196 NA 24.2 (184/184)
Site #35 30.4 (4/4) 22.6 (8/8) 0 (mrem./std. qtr.)
18.2-31.5 8 miles 3350 28.6-31.5 18.8-25.9 Air Particulates Gross Beta - 497 0.010 0.032 (445/445)
Site #7A 0.035 (32/32) 0.033 (52/52) 0 (pCi/m3) 0.015 - 0.066 3 miles 600 0.023 - 0.062 0.016 - 0.070 Gamma Spec.
Composite-38 Cs-134 0.05
<LLD NA
<LLD
<LLD 0
Cs-137 0.06
<LLD NA
<LLD
<LLD 0
Air Radioiodine Gamma Spec. - 499 (pCi/rn3 )
1-131 0.07
<LLD NA
<LLD
<LLD 0
Broadleaf Gamma Spec. - 17 Vegetation 1-131 60
<LLD NA
<LLD
<LLD 0
(pCi/Kg-wet)
Cs-134 60
<LLD NA
<LLD
<LLD 0
Cs-137 80
<LLD NA
<LLD
<LLD 0
Groundwater H 8 2000
<LLD NA
<LLD NA 0
(pCi/liter)
Gamma Spec. - 8 Mn-54 15
<LLD NA
<LLD NA 0
Fe-59 30
<LLD NA
<LLD NA 0
Co-58 15
<LLD NA
<LLD NA 0
Co-60 15
<LLD NA
<LLD NA 0
Zn-65 30
<LLD NA
<LLD NA 0
Zr-95 30
<LLD NA
<LLD NA 0
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 56
TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL
SUMMARY
Palo Verde Nuclear Generating Station Docket Nos. STN 50-528/529/530 Maricopa County, Arizona Calendar Year 2005 Medium or Lower Limit of All Indicator Location with Highest Annual Mean Control Pathway Type and Total Detection Locations Locations Number of Sampled Number of (LLD)
Name Mean (fl Nonroutine (Unit of Analyses (from Table Mean (fr Distance and Range Mean (f)
Reported Measurement)
Performed 6.1)
Range Direction Range Measurements Nb-95 15
<LLD NA
<LLD NA 0
Groundwater 1-131 15
<LLD NA
<LLD NA 0
(pCi/liter)
Cs-134 15
<LLD NA
<LLD NA 0
-continued-Cs-137 18
<LLD NA
<LLD NA 0
Ba-140 60
<LLD NA
<LLD NA 0
La-140 15
<LLD NA
<LLD NA 0
Gross Beta - 48 4.0 3.6 (24/48)
Site #55 4.0 (9/12)
NA 0
2.2-5.0 3 miles 2200 2.9-5.0 H 16 2000
<LLD NA
<LLD NA 0
Gamma Spec. - 48 Drinking Water Mn-54 15
<LLD NA
<LLD NA 0
(pCi/liter)
Fe-59 30
<LLD NA'
<LLD NA 0
Cti 58-15
<LLD NA
<LLD NA 0
0 15
<LLD NA
<LLD NA 0
Zn-65 30
<LLD NA
<LLD NA 0
Zr-95 30
<LLD NA
<LLD NA 0
Nb-95 15
<LLD NA
<LLD NA 0
14131 15
<LLD NA
<LLD NA 0
Cs-34 15
<LLD NA
<LLD NA 0
Cs-137 18
<LLD NA
<LLD NA 0
Ba-140 60
<LLD NA
<LLD NA 0
La-140 15
<LLD NA
<LLD NA 0
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 57
TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL
SUMMARY
Palo Verde Nuclear Generating Station Docket Nos. STN 50-528/529/530 Maricopa County, Arizona Calendar Year 2005 Medium or Lower Limit of All Indicator Location with Highest Annual Mean Control Pathway Type and Total Detection Locations Locations Number of Sampled Number of (LLD)
Name Mean (f)
Nonroutine (Unit of Analyses (from Table Mean (f)'
Distance and Range Mean (f)'
Reported Measurement)
Performed 6.1)
Range Direction Range Measurements Gamma Spec. - 13 1-131 1.0
<LLD NA
<LLD
<LLD 0
Milk Cs-134 15
<LLD NA
<LLD
<LLD 0
(pCi/liter)
Cs-137 18
<LLD NA
<LLD
<LLD 0
Ba-140 60
<LLD NA
<LLD
<LLD 0
La-140 15
<LLD NA
<LLD
<LLD 0
Gamma Spec. - 36 Mn-54 15
<LLD NA
<LLD NA 0
Fe-59 30
<LLD NA
<LLD NA 0
Co-58 15
<LLD NA
<LLD NA 0
Co-60 15
<LLD NA
<LLD NA 0
Zn-65 30
<LLD NA
<LLD NA 0
30
<LLD NA
<LLD NA 0
Nb-95 15
<LLD NA
<LLD NA 0
Surface Water 1-131 15 12 (4/36)
Site #60 13 (1/12)
NA 0
(pCi/liter) 7 -19 Onsite 670 13 -13 t
z~~---- --.-.- ---
-Cs-1 34- -
15
<LLD NA
<LLD NA 0
Cs-137 18
<LLD NA
<LLD NA 0
Ba-140 60
<LLD NA
<LLD NA 0
La-140 15
<LLD NA
<LLD NA 0
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 58
TABLE 11.1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM ANNUAL
SUMMARY
Palo Verde Nuclear Generating Station Maricopa County, Arizona Docket Nos. STN 50-528/529/530 Calendar Year 2005 Medium or Lower Limit of All Indicator Location with Highest Annual Mean Control Pathway Type and Total Detection Locations Locations Number of Sampled Number of (LLD)
Name Mean (fl Nonroutine (Unit of Analyses (from Table Mean (f)a Distance and Range Mean (f)'
Reported Measurement)
Performed 6.1)
Range Direction Range Measurements Surface Water H 12 3000 1598 (8/12)
Site #63 1705 (4/4)
NA 0
(pCi/liter) 1120-2038 Onsite 1800 1633-1763
-continued-(a) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses. (f)
NOTE: Miscellaneous samples that are not listed on Tables 2.1 and 9.1 (not ODCM required) are not included on this table.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 59
- 12.
References
- 1. Pre-Operational Radiological Monitoring Program, Summary Report 1979-1985.
- 2. 1985-2004 Annual Radiological Environmental Operating Reports, Palo Verde Nuclear Generating Station.
- 3. Palo Verde Nuclear Generating Station Technical Specifications and Technical Reference Manual (TRM).
- 4. Offsite Dose Calculation Manual, PVNGS Units 1, 2, and 3.
- 5. Regulatory Guide 4.8, Environmental Technical Specifications for Nuclear Power Plants.
- 6. NRC Radiological Assessment Branch Technical Position on Environmental Monitoring, Revision 1, November 1979.
PVNGS ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT - 2005 60